CN203687070U - Chimney damper door - Google Patents
Chimney damper door Download PDFInfo
- Publication number
- CN203687070U CN203687070U CN201420006036.6U CN201420006036U CN203687070U CN 203687070 U CN203687070 U CN 203687070U CN 201420006036 U CN201420006036 U CN 201420006036U CN 203687070 U CN203687070 U CN 203687070U
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- Prior art keywords
- door
- plate
- rotating shaft
- chimney
- sealing
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- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 51
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 239000002918 waste heat Substances 0.000 abstract description 7
- 210000001503 joint Anatomy 0.000 abstract 2
- 241000490025 Schefflera digitata Species 0.000 abstract 1
- 235000015250 liver sausages Nutrition 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000003292 diminished effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The utility model relates to a chimney of a waste heat boiler, in particular to a chimney damper door which is few in leakage and good in drainage effect and kept good in stability in an open state. The chimney damper door comprises door plates and a driving mechanism, two pair of door plates are arranged, the two door plates in the same pair are opened oppositely, a lower seal base is arranged at the butt joint position of the two door pates in the same pair, and upper seal bases are arranged at the butt joint positions of the door plates and a chimney and between every two adjacent two door plates in the two pairs. Drainage grooves are formed in the upper surfaces of the lower seal bases and communicated with the outside of the chimney. When the door plates are closed, one ends of the door plates are in overlap joint and connected with the upper surfaces of the lower seal bases in a sealed mode, and the other ends of the door plates are in overlap joint and connected with the lower surfaces of the upper seal bases in a sealed mode. The upper surfaces of the door plates are inclined in the mode that one ends, connected with the lower seal bases, of the door plates are low, and the other ends are high. The problems that a chimney damper door is high in leakage rate, poor in drainage effect and not easy to keep in the open state are solved.
Description
Technical field
The utility model relates to the chimney of waste heat boiler, relates in particular to a kind of chimney baffle door.
Background technology
One of parts in the main chimney system of UTILIZATION OF VESIDUAL HEAT IN flue gas are chimney baffle door, in the time that waste heat boiler moves, chimney baffle door are opened, and chimney tail gas passes through main chimney discharged to atmosphere; In the time that waste heat boiler does not move, chimney baffle door can be closed, reduce greatly the reduction of temperature in waste heat boiler, waste heat boiler is started shipment again to the energy that provides larger, reduce the waste heat boiler radiator time.The structure of existing chimney baffle door as China Patent No. as China Patent No. is 2009203013416, Granted publication day be January 13 in 2010 day, be called in the patent document of " main chimney gear door-plate " disclosed, adopt butterfly to split form, be provided with two door-plates, drive door-plate to rotate by connecting rod.Existing chimney gear door panel structure socket is following not enough: slip is high, causes heat insulation effect poor; Drainage effect is poor, and rainwater easily enters in chimney; The height of exporting chimney part when opening is high, require great effort while remaining on opening; Can not know the enable possition of door-plate.
Utility model content
The utility model provide a kind of leak little, drainage effect good, the chimney baffle door of good stability while remaining on opening, the existing slip of chimney baffle door that solved existing two door-plates is large, drainage effect is poor, be not easy to remain on the problem of opening.
Above technical problem solves by following technical proposal: a kind of chimney baffle door, comprise the door-plate of capping chimney and the driving mechanism of driving door-plate folding, described door-plate is provided with rotating shaft, described door-plate has two pairs, two door-plate subtends in same end of door plate are opened, in described chimney, be provided with three upper seal supports and two bottom sealing sockets, two bottom sealing sockets lay respectively at the joint of two door-plates of same end of door plate in two end of door plates, described three upper seal supports lay respectively at the joint of door-plate with chimney wall, and the joint of two adjacent door-plates between end of door plate, described bottom sealing socket upper surface is provided with and the outside rhone being communicated with of chimney, when described door-plate closes up, upper surface, the other end that door-plate one end overlapped and be sealedly connected on described bottom sealing socket overlaps and is sealedly attached to the lower surface of described upper seal support, and door-plate upper surface tilts in one end mode low, that the other end is high connecting with described bottom sealing socket.Due to seal receptacle being set in chimney, when being closed up, door-plate is sealed connected together with the joint between place and the door-plate of chimney contact, thus the therefore low effect of playing raising heat insulation effect of slip.Because door-plate adopts four chip architectures, the width dimensions of monolithic door-plate is diminished, laborsaving when thereby the relative step-down of the height that stretches out chimney part when opening makes door-plate remain on opening, also can reduce driving torque and the rated power of electric operator, and then can select more economical rational electric operator.Door-plate is obliquely installed and bottom sealing socket arranges rhone, water on door-plate can be flow in rhone and through rhone in time and flow to chimney outside, and therefore drainage effect is good.
As preferably, the lower surface of described upper seal support and the upper surface of described bottom sealing socket are all provided with some along the axially extended sealing ditch of described rotating shaft; When door-plate closes up, it between described sealing ditch and described door-plate, is linear sealing.Can be by the sealing effectiveness between door-plate and seal receptacle.
As preferably, the lower surface of described upper seal support and the upper surface of described bottom sealing socket are all provided with some along the axially extended sealing ditch of described rotating shaft, the enclosed construction that described sealing ditch is closed at both ends; When door-plate closes up, have at least the surrounding of a described sealing ditch to be sealed connected together with described door-plate.After door-plate closes up, between the sealing ditch that surrounding is sealed connected together with door-plate and panel, surround annular seal space, in the time that stack temperature reduces, temperature in sealing chamber also can reduce, make the air pressure in sealing chamber decline and form negative pressure, play the effect of automatic formation negative-pressure adsorption, thereby can effectively carry the connection reliability between door-plate and seal receptacle.
As preferably, the upper surface of described door-plate is provided with some reinforcements, between adjacent reinforcement, forms gutter, and described rotating shaft is fixed in described reinforcement, between described rotating shaft and described door-plate, is provided with gap.So both can ensure door-plate can not produce distortion and keep the flatness of setting, can ensure again that the rainwater of panel top flow in rhone.
As preferably, described driving mechanism comprises the first hinged rocking arm of head and the tail successively, the first short connecting rod, the first swing arm, long connecting rod, the second swing arm, the second short connecting rod and the second rocking arm, four rotating shafts in described two end of door plates are respectively the first rotating shaft, the second rotating shaft, the 3rd rotating shaft and the 4th rotating shaft and radially distributing successively along chimney, the first rotating shaft is coaxial and be fixed together with the first rocking arm, the second rotating shaft is coaxial and be fixed in the middle part of the first swing arm with the first swing arm, the 4th rotating shaft is coaxial and be fixed in the middle part of the second swing arm with the second swing arm, the 3rd rotating shaft is coaxial and be fixed together with the second rocking arm.Can make four door-plates synchronously open and close reliably, linkage and synchronism are good.Convenient when repair and maintenance.
As preferably, described driving mechanism also comprises the motor and the handle that link together with described the first rotating shaft.Can either can carry out switch gate by manual mode again by electronic mode.Be convenient to urgent time carry out operation, security is good.
As preferably, described rotating shaft is provided with the indicating arm of mark door-plate folding condition; When door-plate closes up, described indicating arm is the level of state.The opening angle that can know to intuitive and convenient door-plate puts in place to know whether door-plate closes.
As preferably, described door-plate is connected with flexible limit along the edge movable at the axial two ends of rotating shaft, and described flexible limit links together by Compress Spring and described door-plate telescopically.Together with door-plate edge is connected to chimney wall portion time, door-plate can not produce and interfere with chimney wall portion because of thermal expansion, thereby can as much as possible reduce slip.
The utlity model has following advantage: at chimney inner surface, seal receptacle is set, when realizing door-plate and closing up, is sealed connected together with the joint between place and the door-plate of chimney contact, therefore slip is low, heat insulation effect is red good; Because door-plate adopts four chip architectures, the width dimensions of monolithic door-plate is diminished, when opening, door-plate stretches out the relative step-down of height of chimney part, therefore laborsaving while making door-plate remain on opening, driving torque and the rated power of electric operator can be reduced, more economical rational electric operator switch the utility model can be selected; Door-plate is obliquely installed and bottom sealing socket arranges rhone, and the water on door-plate can flow in time in rhone and through rhone and flow to chimney outside, and therefore drainage effect is good.
Brief description of the drawings
Fig. 1 is the schematic top plan view of the utility model embodiment mono-.
Fig. 2 is the syndeton schematic diagram of door-plate and driving mechanism.
Fig. 3 is the schematic top plan view of door-plate.
Fig. 4 is B-B cross-sectional schematic at the A place of Fig. 3.
Fig. 5 is C-C cross-sectional schematic of Fig. 1.
Fig. 6 is the local enlarged diagram at the D place of Fig. 5.
Fig. 7 is the local enlarged diagram at the E place of Fig. 6.
Fig. 8 is the local schematic diagram of the utility model embodiment bis-.
In figure: chimney 1, door-plate 2, left-external side door-plate 2-1, left inside side door plate 2-2, Right Inboard door-plate 2-3, Right Inboard door-plate 2-4, flexible limit 25, connecting hole 251, guiding surface 252, reinforcement 26, gutter 27, Compress Spring 28, connecting pin 29, driving mechanism 3, motor 31, handle 32, transmission mechanism 33, the first rotating shaft 41, the second rotating shaft 42, the 3rd rotating shaft 43, the 4th rotating shaft 44, indicating arm 45, seal receptacle 5, upper seal support 5-1, bottom sealing socket 5-2, upper left seal receptacle 51, lower-left seal receptacle 52, middle upper seal support 53, bottom right seal receptacle 54, upper right seal receptacle 55, gap 56, rhone 57.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
Embodiment mono-, referring to Fig. 1, a kind of chimney baffle door, comprises door-plate 2 and the driving mechanism 3 of capping chimney 1.
Door-plate 2 has two pairs.Four door-plates in two end of door plates 2 are distributed as left-external side door-plate 2-1, left inside side door plate 2-2, Right Inboard door-plate 2-3 and Right Inboard door-plate 2-4.Left-external side door-plate 2-1 and left inside side door plate 2-2 form a pair of and subtend unlatching.Right Inboard door-plate 2-3 and Right Inboard door-plate 2-4 form a pair of and subtend unlatching.Door-plate 2 is provided with rotating shaft 4, is specially left-external side door-plate 2-1 and is provided with the 4th rotating shaft 44.Left inside side door plate 2-2 is provided with the 3rd rotating shaft 43.Right Inboard door-plate 2-3 is provided with the second rotating shaft 42.Right Inboard door-plate 2-4 is provided with the first rotating shaft 41.Therefore the first rotating shaft 41, the second rotating shaft 42, the 3rd rotating shaft 43 and the 4th rotating shaft 44 4 distribute from right to left and are parallel.The two ends of the first rotating shaft 41, the second rotating shaft 42, the 3rd rotating shaft 43 and the 4th rotating shaft 44 are rotationally connected with the both sides, front and back of chimney 1.The edge along the axial two ends of rotating shaft of each sheet door-plate 2 is provided with flexible limit 25.When door-plate 2 closes up, flexible limit 25 is connected on the inner surface of chimney 1.The end of each root rotating shaft is all provided with the indicating arm 45 of mark door-plate position.
In chimney 1, be provided with seal receptacle 5.Seal receptacle 5 comprises upper seal support 5-1 and bottom sealing socket 5-2.Upper seal support 5-1 has three.Three upper seal support 5-1 are respectively upper left seal receptacle 51, middle upper seal support 53 and upper right seal receptacle 55.Bottom sealing socket 5-2 has two.Two bottom sealing sockets are respectively lower-left seal receptacle 52 and bottom right seal receptacle 54.Upper left seal receptacle 51, lower-left seal receptacle 52, middle upper seal support 53, bottom right seal receptacle 54 and upper right seal receptacle 55 distribute from left to right successively.Upper left seal receptacle 51 and upper right seal receptacle 55 are the arcuate structure circumferentially extending along chimney 1.Lower-left seal receptacle 52, middle upper seal support 53 and bottom right seal receptacle 54 threes are the rod shaped structure across chimney.
Driving mechanism 3 comprises motor 31, handle 32 and transmission mechanism 33.The power output shaft of motor 31 and the first rotating shaft 41 are coaxially fixed together.Handle 32 rotates for the power output shaft of drive motors 31.
Referring to Fig. 2, transmission mechanism 33 comprises hinged the first rocking arm 331, the first short connecting rod 332, the first swing arm 333, long connecting rod 334, the second swing arm 335, the second short connecting rod 336 and the second rocking arm 337 of head and the tail successively.The first rotating shaft 41 is coaxial and be fixed together with the first rocking arm 331.The second rotating shaft 42 is coaxial and be fixed in the middle part of the first swing arm with the first swing arm 333.The 4th rotating shaft 44 is coaxial and be fixed in the middle part of the second swing arm with the second swing arm 335.The 3rd rotating shaft 43 is coaxial and be fixed together with the second rocking arm 337.
Referring to Fig. 3, what in this figure, draw is the door-plate that is positioned at edge, and the door-plate in the middle of being positioned at is edge shape difference, and all the other structures are the same.The upper surface that is specially door-plate 2 is provided with some reinforcements 26.Reinforcement 26 and rotating shaft 4 intersect.Between adjacent reinforcement 26, form gutter 27.Rotating shaft 4 is fixed in reinforcement 26.Be specially rotating shaft 4 and be welded in reinforcement 26.
Referring to Fig. 4, door-plate 2 is provided with connecting pin 29.Flexible limit 25 is provided with connecting hole 251.Connecting hole 251 is the strip along the axially-extending of rotating shaft 4 (referring to Fig. 1).Connecting pin 29 is located in connecting hole 251.Flexible limit 25 is provided with guiding surface 252 away from the lower surface of one end of door-plate 2.Between door-plate 2 and flexible limit 25, link together by Compress Spring 28 telescopicallies.
Referring to Fig. 5, between rotating shaft 4 and door-plate 2, be provided with gap 56.
Upper left seal receptacle 51 is positioned at the joint of left-external side door-plate 2-1 and chimney 1.Lower-left seal receptacle 52 is positioned at the joint of left-external side door-plate 2-1 and left inside side door plate 2-2.Middle upper seal support 53 is positioned at the joint of left inside side door plate 2-2 and Right Inboard door-plate 2-3.Bottom right seal receptacle 54 is positioned at the joint of Right Inboard door-plate 2-3 and right outside side door plate 2-4.Upper right seal receptacle 55 is positioned at the joint of right outside side door plate 2-4 and chimney 1.
Referring to Fig. 6, the upper surface of the upper surface of lower-left seal receptacle and bottom right seal receptacle 54 is all provided with and the outside rhone 57 being communicated with of chimney 1.
Referring to Fig. 7, the lower surface of the upper surface of bottom sealing socket (being lower-left seal receptacle and bottom right seal receptacle) and upper seal support (being upper left seal receptacle, middle upper seal support and upper right seal receptacle) be all provided with some along rotating shaft 4(referring to Fig. 1) axially extended sealing ditch 58.
When use,
Referring to Fig. 1, drive the first rotating shaft 41 to rotate by handle 32 or motor 31.
Referring to Fig. 2, when driving right outside side door plate 24 folding, the first rotating shaft 41 drive the second rotating shaft 42, the 3rd rotating shaft 43 and the 3rd rotating shaft 44 to rotate by transmission mechanism 33.The second rotating shaft 42 drives 23 foldings of Right Inboard door-plate.The 3rd rotating shaft 43 drives left inside side door plate 22 foldings.The 4th rotating shaft 44 drives 21 foldings of left-external side door-plate.
Referring to Fig. 5, door-plate 2 carries out subtend synchronous on-off between two according to track F in figure.Close up after putting in place: the left end sealing of left-external side door-plate 2-1 is connected on the lower surface of upper left seal receptacle 51, the right side sealing of left-external side door-plate 2-1 is connected on the upper surface of lower-left seal receptacle 52, and the upper surface of left-external side door-plate 2-1 tilts in the low mode of the high right-hand member of left end; The left end sealing of left inside side door plate 2-2 is connected on the upper surface of lower-left seal receptacle 52, and the right-hand member sealing of left inside side door plate 2-2 is connected on the lower surface of middle upper seal support 53, and the upper surface of left inside side door plate 2-2 tilts in the low mode of the high left end of right-hand member; The left end sealing of Right Inboard door-plate 2-3 is connected on the lower surface of middle upper seal support 53, and the right-hand member sealing of Right Inboard door-plate 2-3 is connected on the upper surface of bottom right seal receptacle 54, and the upper surface of Right Inboard door-plate 2-3 tilts in the low mode of the high right-hand member of left end; The left end sealing of right outside side door plate 2-4 is connected on the upper surface of bottom right seal receptacle 54, and the right-hand member sealing of right outside side door plate 2-4 is connected on the lower surface of upper right seal receptacle 55, and the upper surface of right outside side door plate 2-4 tilts in the low mode of the high left end of right-hand member.
Referring to Fig. 6, the rainwater on door-plate 2 is automatically pooled in rhone 57 two and flows to chimney 1 outside.
Referring to Fig. 7, it between sealing ditch 58 and door-plate 2, is linear sealing.
Referring to Fig. 1, when door-plate 2 closes up (covering chimney) completely, indicating arm 45 is the level of state.When door-plate 2 is opened completely, indicating arm 45 is vertical state.User can judge by the state of indicating arm 45 the folding degree of door-plate 2.
Embodiment bis-, with the difference of embodiment mono-is:
Referring to Fig. 8, the enclosed construction that sealing ditch 57 is closed at both ends; When door-plate 2 closes up, have at least the surrounding of a sealing ditch 57 to be sealed connected together with door-plate 2, make to form between seal receptacle 5 and door-plate the adsorbent chamber of sealing.
Claims (8)
1. a chimney baffle door, comprise the door-plate of capping chimney and the driving mechanism of driving door-plate folding, described door-plate is provided with rotating shaft, it is characterized in that, described door-plate has two pairs, two door-plate subtends in same end of door plate are opened, in described chimney, be provided with three upper seal supports and two bottom sealing sockets, two bottom sealing sockets lay respectively at the joint of two door-plates of same end of door plate in two end of door plates, described three upper seal supports lay respectively at the joint of door-plate with chimney wall, and the joint of two adjacent door-plates between end of door plate, described bottom sealing socket upper surface is provided with and the outside rhone being communicated with of chimney, when described door-plate closes up, upper surface, the other end that door-plate one end overlapped and be sealedly connected on described bottom sealing socket overlaps and is sealedly attached to the lower surface of described upper seal support, and door-plate upper surface tilts in one end mode low, that the other end is high connecting with described bottom sealing socket.
2. chimney baffle door according to claim 1, is characterized in that, the lower surface of described upper seal support and the upper surface of described bottom sealing socket are all provided with some along the axially extended sealing ditch of described rotating shaft; When door-plate closes up, it between described sealing ditch and described door-plate, is linear sealing.
3. chimney baffle door according to claim 1, is characterized in that, the lower surface of described upper seal support and the upper surface of described bottom sealing socket are all provided with some along the axially extended sealing ditch of described rotating shaft, the enclosed construction that described sealing ditch is closed at both ends; When door-plate closes up, have at least the surrounding of a described sealing ditch to be sealed connected together with described door-plate.
4. according to the chimney baffle door described in claim 1 or 2 or 3, it is characterized in that, the upper surface of described door-plate is provided with some reinforcements, between adjacent reinforcement, forms gutter, described rotating shaft is fixed in described reinforcement, between described rotating shaft and described door-plate, is provided with gap.
5. according to the chimney baffle door described in claim 1 or 2 or 3, it is characterized in that, described driving mechanism comprises the first hinged rocking arm of head and the tail successively, the first short connecting rod, the first swing arm, long connecting rod, the second swing arm, the second short connecting rod and the second rocking arm, four rotating shafts in described two end of door plates are respectively the first rotating shaft, the second rotating shaft, the 3rd rotating shaft and the 4th rotating shaft and radially distributing successively along chimney, the first rotating shaft is coaxial and be fixed together with the first rocking arm, the second rotating shaft is coaxial and be fixed in the middle part of the first swing arm with the first swing arm, the 4th rotating shaft is coaxial and be fixed in the middle part of the second swing arm with the second swing arm, the 3rd rotating shaft is coaxial and be fixed together with the second rocking arm.
6. chimney baffle door according to claim 5, is characterized in that, described driving mechanism also comprises the motor and the handle that link together with described the first rotating shaft.
7. according to the chimney baffle door described in claim 1 or 2 or 3, it is characterized in that, described rotating shaft is provided with the indicating arm of mark door-plate folding condition; When door-plate closes up, described indicating arm is the level of state.
8. according to the chimney baffle door described in claim 1 or 2 or 3, it is characterized in that, described door-plate is connected with flexible limit along the edge movable at the axial two ends of rotating shaft, and described flexible limit links together by Compress Spring and described door-plate telescopically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006036.6U CN203687070U (en) | 2014-01-07 | 2014-01-07 | Chimney damper door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420006036.6U CN203687070U (en) | 2014-01-07 | 2014-01-07 | Chimney damper door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203687070U true CN203687070U (en) | 2014-07-02 |
Family
ID=51008960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420006036.6U Expired - Lifetime CN203687070U (en) | 2014-01-07 | 2014-01-07 | Chimney damper door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203687070U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982901A (en) * | 2014-01-07 | 2014-08-13 | 杭州杭锅通用设备有限公司 | Chimney baffle door structure |
| CN105135455A (en) * | 2015-09-23 | 2015-12-09 | 沈阳化建通用设备有限公司 | Flue gas baffle door |
| CN107327862A (en) * | 2017-09-05 | 2017-11-07 | 无锡市华通电力设备有限公司 | A kind of fast opening mechanism of baffle door |
| CN113154422A (en) * | 2021-04-14 | 2021-07-23 | 山东国舜建设集团有限公司 | Construction process for adding baffle door to steel chimney and chimney structure thereof |
-
2014
- 2014-01-07 CN CN201420006036.6U patent/CN203687070U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103982901A (en) * | 2014-01-07 | 2014-08-13 | 杭州杭锅通用设备有限公司 | Chimney baffle door structure |
| CN103982901B (en) * | 2014-01-07 | 2016-04-27 | 杭州杭锅通用设备有限公司 | Flue damper door |
| CN105135455A (en) * | 2015-09-23 | 2015-12-09 | 沈阳化建通用设备有限公司 | Flue gas baffle door |
| CN105135455B (en) * | 2015-09-23 | 2017-06-16 | 沈阳化建通用设备有限公司 | Gas baffle door |
| CN107327862A (en) * | 2017-09-05 | 2017-11-07 | 无锡市华通电力设备有限公司 | A kind of fast opening mechanism of baffle door |
| CN107327862B (en) * | 2017-09-05 | 2023-09-26 | 无锡市华通电力设备有限公司 | Baffle door quick-opening mechanism |
| CN113154422A (en) * | 2021-04-14 | 2021-07-23 | 山东国舜建设集团有限公司 | Construction process for adding baffle door to steel chimney and chimney structure thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140702 |
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| CX01 | Expiry of patent term |