Impermeable structure for flue gas baffle door

Abstract

The invention relates to an anti-seepage structure for a flue gas baffle door applied to the technical field of flue gas baffle doors, and the anti-seepage structure comprises a door frame, a door plate window, a door plate compartment body, a fixing plate, a flue gas through pipe, an anti-seepage screw cover and a supporting pipe. According to the smoke baffle door, the anti-seepage screw cap is arranged in the supporting pipe, the anti-seepage screw cap is in threaded connection with the supporting pipe, the anti-seepage screw cap gradually rotates to be away from the supporting pipe, then the anti-seepage screw cap is in threaded connection with the smoke through pipe, the smoke through pipe is sealed through the anti-seepage screw cap, and the smoke permeation prevention effect of the smoke baffle door is effectively improved; the anti-seepage screw cap is located in the door plate compartment body, the abrasion condition of a thread sealing structure between the anti-seepage screw cap and the supporting pipe is effectively avoided, and then the service life of the anti-seepage mechanism of the flue gas baffle door is effectively prolonged.

Description

Technical Field

[0001] The present invention relates to an anti-permeation structure, in particular to an anti-permeation structure for a smoke damper door applied in the technical field of smoke damper doors. Background Art

[0002] Flue gas damper doors are key intercepting devices in flue gas and air duct systems in power plants and other industrial fields. Flue gas damper doors are mostly used in the inlet and outlet or bypass flue of the absorption tower of the flue gas desulfurization system, or in the flue gas denitrification and flue gas dust removal system. They have full opening and closing functions, allowing the medium to flow or shut off completely in the pipeline.

[0003] The specification of Chinese patent CN108180292A discloses "A gate door for flue gas desulfurization". By setting up a cylinder, a fixed plate, a shaft pin, a movable block, a movable rod, a movable groove, a fixed block and a movable plate for coordinated use, the problem of poor tightness of the existing gate door for flue gas desulfurization is solved. The gate door for flue gas desulfurization has the advantage of good tightness, will not cause the gate door to be inflexible to use, will not be loose during the closing process, will not easily cause flue gas to escape, can achieve a sealing effect, and is convenient for users to use. The specification of Chinese patent CN113669474A discloses "A sealing mechanism for anti-penetration flue gas baffle door". The electric telescopic rod drives the movable channel to descend to squeeze the airbag so that the airbag is compressed into the T-shaped through hole and pushes the sliding rod to move outward, so that the sealing plate matches the slot, further improving the sealing effect. When the door panel is heated, the paraffin block can absorb heat and convert it from solid to liquid to improve the heat absorption effect, thereby improving the heat resistance of the sealing plate and increasing the service life.

[0004] There are two types of damper doors installed in the flue gas duct, namely, flap-type damper doors and gate-type damper doors. After repeated use, the sealing mechanism between the gate and the door frame of the gate-type damper door is prone to wear, which in turn affects the sealing effect of the flue gas damper door. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that after repeated use, the sealing mechanism between the gate and the door frame of the gate-type damper door is worn, thereby affecting the sealing effect of the smoke damper door.

[0006] To solve the above problems, the present invention provides an anti-permeation structure for a smoke damper door, comprising a door frame, a door panel window formed at the top of the door frame, a lifting bracket fixedly connected to the top of the door panel window, a driving mechanism fixedly connected to the middle of the lifting bracket, an output end of the driving mechanism fixedly connected to a door panel body, the door panel body being movably connected to the door panel window, and an outer wall of the door panel body being slidably connected to an inner wall of the door frame;

[0007] The end of the door frame facing the incoming smoke is fixedly connected to a fixed plate, the middle of the fixed plate is fixedly connected to a smoke duct, the end of the door panel compartment close to the fixed plate is rotatably connected to an anti-seepage screw cover, and the other end of the door panel compartment is fixedly connected to a support pipe, the support pipe has the same diameter as the smoke duct, and both the support pipe and the smoke duct are threadedly connected to the anti-seepage screw cover.

[0008] In the above-mentioned anti-seepage structure for the smoke damper door, by operating the anti-seepage screw cap to rotate, the anti-seepage screw cap is gradually rotated away from the support pipe, and at the same time the anti-seepage screw cap is threadedly connected and sealed with the smoke duct, thereby effectively improving the smoke damper door's anti-smoke penetration effect.

[0009] As a further improvement of the present application, an electric push rod for rotating the cover is hinged on the top of the door panel compartment, and a push-turn rod is fixedly connected to the outer surface of the top of the anti-seepage rotary cover. The output end of the electric push rod for rotating the cover is rotatably sleeved with the push-turn rod, and the electric push rod for rotating the cover is utilized to promote the rotational movement of the anti-seepage rotary cover, and the rotational sleeved connection between the output end of the electric push rod for rotating the cover and the push-turn rod can effectively prevent the electric push rod for rotating the cover from affecting the horizontal displacement of the anti-seepage rotary cover.

[0010] As a further improvement of the present application, a dust cover is sleeved on the outside of one end of the smoke duct close to the door panel compartment, and a return spring is fixedly connected between the dust cover and the fixed plate. The dust cover is used to shield the threaded structure on the outside of the smoke duct, effectively preventing particles in the smoke from adhering to the smoke duct, thereby avoiding affecting the threaded connection between the smoke duct and the anti-seepage screw cover.

[0011] As a further improvement of the present application, a sealing buffer ring is inlaid on the surface of the dust cover, which is tightly fitted against the anti-seepage screw cap. The sealing buffer ring is made of fluororubber material. When the smoke duct and the anti-seepage screw cap are threadedly connected, the anti-seepage screw cap is tightly fitted against the dust cover. By tightening the sealing buffer ring, the sealing effect between the smoke duct and the anti-seepage screw cap is further effectively improved.

[0012] As another improvement of the present application, an anti-seepage pressure cover is also slidably connected to the end of the door panel compartment close to the fixed plate, and the anti-seepage pressure cover is sleeved with the smoke duct. The anti-seepage pressure cover and the smoke duct are sleeved and combined to form a closed seal, which effectively simplifies the structure of the anti-seepage pressure cover and the smoke duct and facilitates the processing and production of the anti-seepage pressure cover and the smoke duct.

[0013] As another improved supplement to the present application, a sealing pressure ring is fixedly embedded in the inner wall of the anti-seepage pressure cover, which is tightly corresponding to the pipe mouth of the flue gas duct, and the sealing pressure ring is made of fluororubber material. By compressing the sealing pressure ring to deform, the sealing effect of the socket connection between the anti-seepage pressure cover and the flue gas duct is effectively improved.

[0014] As another improved supplement to the present application, positioning piles are fixedly connected to the left and right ends of the door panel compartment, and pile tube seats are fixedly connected to the left and right ends of the anti-seepage pressure cover. The positioning piles are socketed with the pile tube seats. By socketing the positioning piles with the pile tube seats, the telescopic movement stability of the anti-seepage pressure cover is effectively improved.

[0015] As another improvement of the present application, a push rod is fixedly connected between the two pile cylinder seats, and a pressure cover electric push rod is hinged on the top of the door panel compartment. The output end of the pressure cover electric push rod is hinged to the push rod, and the push rod is pushed by the pressure cover electric push rod to realize automatic connection between the anti-seepage pressure cover and the smoke duct.

[0016] In summary, the present invention installs the smoke duct in the middle of the fixed plate, so that the smoke in the door frame is concentrated and circulated in the smoke duct. Subsequently, after the door panel compartment is inserted into the door frame for closing, the anti-seepage screw cover on the door panel compartment is operated to rotate, and the anti-seepage screw cover is threadedly connected to the support tube, so that the anti-seepage screw cover gradually rotates away from the support tube, and then the anti-seepage screw cover is threadedly connected to the smoke duct to close the smoke duct, so that the smoke duct for concentrated smoke is secondary sealed after the door panel compartment is in place, effectively improving the anti-smoke penetration effect of the smoke damper door, and when the door panel compartment is inserted into the door frame for closing, the anti-seepage screw cover is inside the door panel compartment, effectively avoiding wear of the threaded sealing structure between the anti-seepage screw cover and the support tube, thereby effectively improving the service life of the anti-seepage mechanism of the smoke damper door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall three-dimensional structural diagram of the first embodiment of the present application;

[0018] Figure 2 This is a three-dimensional structural diagram of the door frame and lifting bracket according to the first embodiment of the present application;

[0019] Figure 3 This is a three-dimensional structural demonstration diagram of the first embodiment of the present application in a raised state of the anti-seepage screw cap;

[0020] Figure 4 This is an enlarged view of the threaded connection between the anti-seepage screw cap, the smoke duct and the support tube in the first embodiment of the present application;

[0021] Figure 5 This is a three-dimensional structural diagram of the door panel compartment and the anti-seepage rotary cover according to the first embodiment of the present application;

[0022] Figure 6 This is a three-dimensional structural diagram of the anti-seepage screw cap according to the first embodiment of the present application;

[0023] Figure 7 This is an overall three-dimensional structural diagram of the second embodiment of the present application;

[0024] Figure 8 This is a schematic diagram of the three-dimensional structure of the second embodiment of the present application in a raised state of the anti-seepage pressure cover;

[0025] Figure 9 This is a side cross-sectional view of the anti-seepage pressure cover and the smoke duct according to the second embodiment of the present application;

[0026] Figure 10 This is a three-dimensional structural diagram of the anti-seepage pressure cover and door panel compartment according to the second embodiment of the present application;

[0027] Figure 11 This is a three-dimensional structural diagram of the anti-seepage pressure cover according to the second embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1. Door frame; 101. Door panel window; 102. Lifting bracket; 103. Driving mechanism; 104. Door panel compartment; 105. Fixed plate; 106. Smoke duct; 107. Dust cover; 108. Return spring; 109. Sealing buffer ring; 2. Anti-seepage screw cap; 201. Support tube; 202. Screw cap electric push rod; 203. Push-turn rod; 3. Anti-seepage pressure cap; 301. Sealing pressure ring; 302. Positioning pile; 303. Pile tube seat; 304. Push rod; 305. Pressure cap electric push rod. DETAILED DESCRIPTION

[0030] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] Figures 1 to 3 FIG. 1 shows an anti-permeation structure for a smoke damper door, comprising a door frame 1, a door panel window 101 being formed at the top of the door frame 1, a lifting bracket 102 being fixedly connected to the top of the door panel window 101, a driving mechanism 103 being fixedly connected to the middle of the lifting bracket 102, an output end of the driving mechanism 103 being fixedly connected to a door panel body 104, the door panel body 104 being movably connected to the door panel window 101, and an outer wall of the door panel body 104 being slidably connected to an inner wall of the door frame 1;

[0033] When the smoke damper door is closed, the driving mechanism 103 drives the door panel body 104 to pass through the door panel window 101, and the door panel body 104 descends to the inside of the door frame 1, sealing the inside of the door frame 1. This sealing method is a gate type smoke damper door in the present technical field. The specific operation content is not described in detail here. The driving mechanism 103 is a driving device that drives the door panel body 104 to move up and down. The commonly used driving mechanisms of the gate type smoke damper door are screw drive and hydraulic cylinder drive. This solution is described in the attached Figure 1 The driving mechanism 103 used in the embodiment is a screw driving method, and those skilled in the art can select an appropriate driving mechanism according to actual needs.

[0034] Figures 3 to 6 It is shown that the end of the door frame 1 facing the incoming smoke is fixedly connected to a fixed plate 105, the middle of the fixed plate 105 is fixedly connected to a smoke duct 106, the end of the door panel compartment 104 close to the fixed plate 105 is rotatably connected to an anti-seepage rotary cover 2, the other end of the door panel compartment 104 is fixedly connected to a support pipe 201, the support pipe 201 has the same diameter as the smoke duct 106, and the support pipe 201 and the smoke duct 106 are both threadedly connected to the anti-seepage rotary cover 2, the top of the door panel compartment 104 is hinged with a rotary cover electric push rod 202, the top outer surface of the anti-seepage rotary cover 2 is fixedly connected with a push-and-turn rod 203, the output end of the rotary cover electric push rod 202 is rotatably sleeved with the push-and-turn rod 203, the rotary cover electric push rod 202 is used to promote the rotational movement of the anti-seepage rotary cover 2, and the output end of the rotary cover electric push rod 202 is rotatably sleeved with the push-and-turn rod 203, so as to effectively prevent the rotary cover electric push rod 202 from affecting the horizontal displacement of the anti-seepage rotary cover 2;

[0035] After the door panel body 104 is lowered into the door frame 1 and the interior of the door frame 1 is sealed, the anti-seepage screw cover 2 is pushed to rotate by the screw cover electric push rod 202. The anti-seepage screw cover 2 is threadedly connected to the support tube 201, so that the anti-seepage screw cover 2 is gradually rotated away from the support tube 201. The anti-seepage screw cover 2 is then threadedly connected to the smoke duct 106, so that the anti-seepage screw cover 2 and the smoke duct 106 are threadedly combined to seal the smoke duct 106, thereby effectively improving the smoke infiltration prevention effect of the smoke damper door.

[0036] During the process of the door panel compartment 104 being lowered and inserted into the door frame 1, the entire part of the anti-seepage rotary cover 2 is still inside the door panel compartment 104, that is, the outer edge of the anti-seepage rotary cover 2 is parallel to the outer surface of the door panel compartment 104, thereby effectively avoiding the friction and wear between the door panel compartment 104 and the door frame 1 in the threaded sealing structure between the anti-seepage rotary cover 2 and the support tube 201, and effectively improving the service life of the anti-seepage mechanism of the smoke damper door.

[0037] Figure 4 As shown, a dust cover 107 is sleeved on the outside of one end of the smoke duct 106 close to the door panel compartment 104, and a return spring 108 is fixedly connected between the dust cover 107 and the fixed plate 105. The dust cover 107 is used to shield the threaded structure on the outside of the smoke duct 106, effectively preventing particles in the smoke from adhering to the smoke duct 106, thereby avoiding affecting the threaded connection between the smoke duct 106 and the anti-seepage screw cap 2. A sealing buffer ring 109 is inlaid on the surface of the dust cover 107, which is in close contact with the anti-seepage screw cap 2 and is made of fluororubber material. When the smoke duct 106 is threadedly connected to the anti-seepage screw cap 2, the anti-seepage screw cap 2 is in close contact with the dust cover 107. By pressing the sealing buffer ring 109, the sealing effect between the smoke duct 106 and the anti-seepage screw cap 2 is further effectively improved.

[0038] When the smoke damper door is in the open state, the smoke can pass through the smoke duct 106, allowing the smoke to circulate inside the door frame 1, and the return spring 108 pushes the dust cover 107 to move to the pipe mouth position of the smoke duct 106. The dust cover 107 is used to cover the threaded structure on the outside of the smoke duct 106, effectively preventing particles in the smoke from adhering to the threaded structure on the outside of the smoke duct 106. When the anti-seepage screw cover 2 is threadedly connected to the smoke duct 106, the anti-seepage screw cover 2 is in close contact with the dust cover 107, compressing the return spring 108, and pressing the sealing buffer ring 109 through the anti-seepage screw cover 2, further effectively improving the sealing effect between the smoke duct 106 and the anti-seepage screw cover 2.

[0039] The second implementation method:

[0040] Compared with the first embodiment, the anti-seepage rotary cover 2 is replaced by an anti-seepage pressure cover 3. The specific newly added structure is as follows, and the remaining structure is consistent with the first embodiment.

[0041] Figures 7 to 11 As shown, the door panel compartment 104 is slidably connected to one end of the fixed plate 105, and the anti-seepage pressure cover 3 is sleeved with the smoke duct 106. The anti-seepage pressure cover 3 and the smoke duct 106 are sleeved and closed, which effectively simplifies the structure of the anti-seepage pressure cover 3 and the smoke duct 106, and facilitates the processing and production of the anti-seepage pressure cover 3 and the smoke duct 106. The inner wall of the anti-seepage pressure cover 3 is fixedly inlaid with a sealing pressure ring 301, which is tightly corresponding to the pipe mouth of the smoke duct 106, and the sealing pressure ring 301 is made of fluororubber material. The anti-seepage pressure cover 3 is tightly fitted with the sealing pressure ring 301, which effectively improves the sleeve sealing of the anti-seepage pressure cover 3 and the smoke duct 106. The left and right ends of the door panel compartment 104 are fixedly connected with positioning piles 302, and the left and right ends of the anti-seepage pressure cover 3 are fixedly connected with pile tube seats 303. The positioning piles 302 are sleeved with the pile tube seats 303. The sleeved connection between the positioning piles 302 and the pile tube seats 303 effectively improves the telescopic movement stability of the anti-seepage pressure cover 3. A push rod 304 is fixedly connected between the two pile tube seats 303. The top of the door panel compartment 104 is hinged with a pressure cover electric push rod 305. The output end of the pressure cover electric push rod 305 is hinged with the push rod 304. The pressure cover electric push rod 305 pushes the push rod 304 to realize the automatic sleeve connection of the anti-seepage pressure cover 3 and the smoke duct 106.

[0042] The anti-seepage pressure cover 3 is used to replace the anti-seepage rotary cover 2. When the smoke damper door is closed, the door panel compartment 104 is lowered to the inside of the door frame 1 to initially seal the inside of the door frame 1. The electric push rod 305 of the pressure cover pushes the push rod 304, driving the pile tube seat 303 to slide on the positioning pile 302, so that the anti-seepage pressure cover 3 and the smoke duct 106 are automatically connected. The sealing pressure ring 301 on the inner wall of the anti-seepage pressure cover 3 is in close contact with the pipe mouth of the smoke duct 106. By pressing the sealing pressure ring 301 Deformation effectively improves the sealing effect of the sleeve connection between the anti-seepage pressure cover 3 and the smoke duct 106. The sleeve connection method of the anti-seepage pressure cover 3 and the smoke duct 106 is simpler than the first embodiment. The threaded connection method of the anti-seepage screw cover 2 and the smoke duct 106 is simpler. The anti-seepage pressure cover 3 and the smoke duct 106 do not require threaded structure processing, which effectively improves the processing and production efficiency of the anti-seepage pressure cover 3 and the smoke duct 106, and is convenient for the inspection and maintenance of the anti-seepage pressure cover 3 and the smoke duct 106.

[0043] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An anti-permeation structure for a smoke damper door, characterized by: The invention comprises a door frame (1), wherein a door panel window (101) is provided at the top of the door frame (1), a lifting bracket (102) is fixedly connected to the top of the door panel window (101), a driving mechanism (103) is fixedly connected to the middle of the lifting bracket (102), an output end of the driving mechanism (103) is fixedly connected to a door panel body (104), the door panel body (104) is movably connected to the door panel window (101), and an outer wall of the door panel body (104) is slidably connected to an inner wall of the door frame (1); The end of the door frame (1) facing the incoming smoke is fixedly connected to a fixed plate (105), the middle of the fixed plate (105) is fixedly connected to a smoke duct (106), the end of the door panel compartment (104) close to the fixed plate (105) is rotatably connected to an anti-seepage rotary cover (2), and the other end of the door panel compartment (104) is fixedly connected to a support pipe (201), the support pipe (201) and the smoke duct (106) have the same diameter, and both the support pipe (201) and the smoke duct (106) are threadedly connected to the anti-seepage rotary cover (2).

2. The anti-permeation structure for a smoke damper door according to claim 1, characterized in that: The top of the door panel compartment (104) is hingedly connected to a rotary cover electric push rod (202), the top outer surface of the anti-seepage rotary cover (2) is fixedly connected to a push-rotating rod (203), and the output end of the rotary cover electric push rod (202) is rotatably sleeved with the push-rotating rod (203).

3. The anti-permeation structure for a smoke damper door according to claim 1, characterized in that: A dust cover (107) is sleeved on the outside of one end of the smoke duct (106) close to the door panel compartment (104), and a return spring (108) is fixedly connected between the dust cover (107) and the fixed plate (105).

4. The anti-permeation structure for a smoke damper door according to claim 3, characterized in that: A sealing buffer ring (109) is inlaid on the surface of the dust cover (107), the sealing buffer ring (109) is in close contact with the anti-seepage rotary cover (2), and the sealing buffer ring (109) is made of fluororubber material.

5. The anti-permeation structure for a smoke damper door according to claim 1, characterized in that: An anti-seepage pressure cover (3) is also slidably connected to one end of the door panel compartment (104) close to the fixed plate (105), and the anti-seepage pressure cover (3) is sleeved with the smoke duct (106).

6. The anti-permeation structure for a smoke damper door according to claim 5, characterized in that: A sealing pressure ring (301) is fixedly embedded on the inner wall of the anti-seepage pressure cover (3), the sealing pressure ring (301) is tightly aligned with the pipe opening of the smoke duct (106), and the sealing pressure ring (301) is made of fluororubber material.

7. The anti-permeation structure for a smoke damper door according to claim 5, characterized in that: Positioning piles (302) are fixedly connected to both left and right ends of the door panel compartment (104), and pile cylinder seats (303) are fixedly connected to both left and right ends of the anti-seepage pressure cover (3), and the positioning piles (302) are sleeved with the pile cylinder seats (303).

8. The anti-permeation structure for a smoke damper door according to claim 7, characterized in that: A push rod (304) is fixedly connected between the two pile cylinder seats (303), a pressure cover electric push rod (305) is hinged on the top of the door panel compartment (104), and an output end of the pressure cover electric push rod (305) is hinged to the push rod (304).

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