CN103982901B - Flue damper door - Google Patents
Flue damper door Download PDFInfo
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- CN103982901B CN103982901B CN201410004709.9A CN201410004709A CN103982901B CN 103982901 B CN103982901 B CN 103982901B CN 201410004709 A CN201410004709 A CN 201410004709A CN 103982901 B CN103982901 B CN 103982901B
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Abstract
The present invention relates to the chimney of waste heat boiler.A kind of leak little, drainage effect good, the flue damper door of good stability when remaining on opening, comprise door-plate and driving mechanism, it is two right that door-plate has, two panels door-plate subtend in same end of door plate is opened, the joint of the two panels door-plate of same end of door plate is provided with bottom sealing socket, the joint of the adjacent door-plate between the joint of door-plate and chimney and two end of door plates is all provided with upper seal support, and bottom sealing socket upper surface is provided with the rhone with chimney ft connection; When door-plate closes up, door-plate one end overlap and be sealedly connected on the upper surface of bottom sealing socket, the other end overlaps and is sealedly attached to the lower surface of upper seal support, the mode that one end that door-plate upper surface connects with same bottom sealing socket is low, the other end is high tilts.The invention solves that chimney baffle door slip is large, drainage effect is poor, be not easy to remain on the problem of opening.
Description
Technical field
The present invention relates to the chimney of waste heat boiler, particularly relate to a kind of flue damper door.
Background technology
One of parts in the main chimney systems of UTILIZATION OF VESIDUAL HEAT IN flue gas are chimney baffle door, when waste heat boiler runs, are opened by chimney baffle door, and chimney tail gas passes through main chimney discharged to air; When waste heat boiler does not run, chimney baffle door can be closed, reduce the reduction of temperature in waste heat boiler greatly, waste heat boiler is started shipment again larger energy is provided, reduce the waste heat boiler radiator time.The structure of existing chimney baffle door as China Patent No. as China Patent No. be 2009203013416, authorized announcement date is called disclosed in the patent document of " main chimney gear door-plate " for January 13 in 2010 day, butterfly is adopted to split form, be provided with two door-plates, drive door-plate to rotate by connecting rod.Not enough below existing chimney gear door panel structure socket: slip is high, causes heat insulation effect poor; Drainage effect is poor, and rainwater easily enters in chimney; The height exporting chimney part during opening is high, require great effort when remaining on opening; The enable possition of door-plate can not be known.
Summary of the invention
The invention provides a kind of leak little, drainage effect good, the flue damper door of good stability when remaining on opening, the slip existing for chimney baffle door solving existing two panels door-plate is large, drainage effect is poor, be not easy to remain on the problem of opening.
Above technical problem is solved by following technical proposal: a kind of flue damper door, comprise the door-plate of capping chimney and drive the driving mechanism of door-plate folding, described door-plate is provided with rotating shaft, it is two right that described door-plate has, two panels door-plate subtend in same end of door plate is opened, three upper seal supports and two bottom sealing sockets are provided with in described chimney, two bottom sealing sockets lay respectively at the joint of the two panels door-plate 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 two joints of adjacent door-plate between end of door plate, described bottom sealing socket upper surface is provided with the rhone with chimney ft connection, when described door-plate closes up, door-plate one end overlap and be sealedly connected on the upper surface of described bottom sealing socket, the other end overlaps and is sealedly attached to the lower surface of described upper seal support, the mode that door-plate upper surface is low with the one end connected with described bottom sealing socket, the other end is high tilts.Owing to arranging seal receptacle in chimney, be sealed connected together when door-plate is closed up with the joint between the place of chimney contact and door-plate, therefore slip is low thus play and improve the effect of heat insulation effect.Because door-plate adopts four chip architectures, the width dimensions of monolithic door-plate is diminished, the height stretching out chimney part during opening is when making door-plate remain on opening laborsaving relative to step-down, also can reduce driving torque and the rated power of electric operator, and then more economical rational electric operator can be selected.Door-plate is obliquely installed and bottom sealing socket arranges rhone, and the water on door-plate can be flow in rhone in time and flow to chimney outside through rhone, 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, be linear sealing between described sealing ditch and described door-plate.Can 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, and described sealing ditch is the enclosed construction of closed at both ends; When door-plate closes up, the surrounding of a described sealing ditch is had at least to be sealed connected together with described door-plate.After door-plate closes up, annular seal space is surrounded between the sealing ditch that surrounding is sealed connected together with door-plate and panel, when 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 automatically forming negative-pressure adsorption, thus effectively can carry the connection reliability between door-plate and seal receptacle.
As preferably, the upper surface of described door-plate is provided with some reinforcements, forms gutter between adjacent reinforcement, and described rotating shaft is fixed in described reinforcement, is provided with gap between described rotating shaft and described door-plate.So both can ensure that door-plate can not produce the flatness of distortion and maintenance setting, can ensure again that the rainwater above panel flow in rhone.
As preferably, be provided with cavity in described door-plate, described cavity all exceeds described rotating shaft along the radial two ends of described rotating shaft, and described cavity is built with moveable balance weight; When described door-plate closes up, described cavity tilts in the mode of the one end being positioned at bottom sealing socket lower than the other end, and the moment that described balance weight produces and the moment sum that described door-plate produces make described door-plate remain on closed configuration; When described door-plate is opened, the moment that described balance weight produces and the moment sum that described door-plate produces make described door-plate remain on opening.Door-plate not only can be made to open in time closing all laborsaving, but also door-plate can be made no matter reliably can both to remain on current state for when unlatching or closed condition, good reliability during door-plate work.
As preferably, described cavity is annular seal space, and described cavity is provided with the check valve opened towards cavity outside.The temperature of the flue gas that chimney can be utilized to discharge is to be that annular seal space inside forms vacuum, and when door-plate covers, annular seal space can play the effect of vacuum heat-insulation, thus effectively improves heat insulation effect of the present invention.
As preferably, described driving mechanism comprises the first rocking arm that head and the tail are hinged successively, first short connecting rod, first swing arm, long connecting rod, second swing arm, 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, second rotating shaft, 3rd rotating shaft and the 4th rotating shaft and radial direction along chimney distribute successively, first rotating shaft is coaxial and be fixed together with the first rocking arm, second rotating shaft is coaxial and be fixed in the middle part of the first swing arm with the first swing arm, 4th rotating shaft is coaxial and be fixed in the middle part of the second swing arm with the second swing arm, 3rd rotating shaft is coaxial and be fixed together with the second rocking arm.Four door-plates can be made reliably synchronously to open and close, linkage and synchronism good.Convenient during repair and maintenance.
As preferably, described driving mechanism also comprises the motor and handle that link together with described first rotating shaft.Mode manually switch gate can either can be carried out again by electronic mode.Carry out operation when being convenient to urgent, 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.Can know to intuitive and convenient that the opening angle of 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 is linked together by Compress Spring and described door-plate telescopically.Time together with door-plate edge is connected to chimney wall portion, door-plate can not produce with chimney wall portion because of thermal expansion interferes, thus as much as possible can reduce slip.
The present invention has following advantage: arrange seal receptacle at chimney inner surface, realizes being sealed connected together with the joint between the place of chimney contact and door-plate when door-plate closes up, and 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, during opening, door-plate stretches out the relative step-down of height of chimney part, laborsaving when therefore making door-plate remain on opening, driving torque and the rated power of electric operator can be reduced, the present invention of more economical rational electric operator switch can be selected; Door-plate is obliquely installed and bottom sealing socket arranges rhone, and the water on door-plate can to flow in time in rhone and to flow to chimney outside through rhone, and therefore drainage effect is good.
Accompanying drawing explanation
Fig. 1 is the schematic top plan view of the embodiment of the present invention one.
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 close-up schematic view at the D place of Fig. 5.
Fig. 7 is the close-up schematic view at the E place of Fig. 6.
The sectional view of the door-plate in Fig. 8 embodiment of the present invention two.
Fig. 9 is the partial schematic diagram in the embodiment of the present invention two.
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, first rotating shaft 41, second rotating shaft 42, 3rd rotating shaft 43, 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, cavity 58, balance weight 59, check valve 50.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the present invention is further illustrated.
Embodiment one, see Fig. 1, a kind of flue damper door, comprises door-plate 2 and the driving mechanism 3 of capping chimney 1.
It is two right that door-plate 2 has.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 is formed a pair and subtend is opened.Right Inboard door-plate 2-3 and Right Inboard door-plate 2-4 is formed a pair and subtend is opened.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.First rotating shaft 41, second rotating shaft 42, the 3rd rotating shaft 43 and the 4th rotating shaft 44 4 from right to left therefore distribution and parallel.The two ends of the first rotating shaft 41, 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.Door-plate 2-in-1 hold together time limit 25 of stretching be 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.
Seal receptacle 5 is provided with in chimney 1.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 extended along chimney 1 circumference.Lower-left seal receptacle 52, middle upper seal support 53 and bottom right seal receptacle 54 three are the rod-like structure across chimney.
Driving mechanism 3 comprises motor 31, handle 32 and transmission mechanism 33.Power output shaft and first rotating shaft 41 of motor 31 are coaxially fixed together.Handle 32 rotates for the power output shaft of drive motors 31.
See Fig. 2, transmission mechanism 33 comprises the first hinged from beginning to end successively rocking arm 331, first short connecting rod 332, first swing arm 333, long connecting rod 334, second swing arm 335, second short connecting rod 336 and the second rocking arm 337.First rotating shaft 41 is coaxial and be fixed together with the first rocking arm 331.Second rotating shaft 42 is coaxial and be fixed in the middle part of the first swing arm with the first swing arm 333.4th rotating shaft 44 is coaxial and be fixed in the middle part of the second swing arm with the second swing arm 335.3rd rotating shaft 43 is coaxial and be fixed together with the second rocking arm 337.
See Fig. 3, the door-plate for being positioned at edge drawn in this figure, being positioned at middle door-plate is edge shape difference, and all the other structures are the same.The upper surface being specially door-plate 2 is provided with some reinforcements 26.Reinforcement 26 and rotating shaft 4 intersect.Gutter 27 is formed between adjacent reinforcement 26.Rotating shaft 4 is fixed in reinforcement 26.Be specially rotating shaft 4 and be welded in reinforcement 26.
See 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 of the axially-extending along rotating shaft 4 (see 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.Linked together by Compress Spring 28 telescopically between door-plate 2 and flexible limit 25.
See 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.
See Fig. 6, the upper surface of lower-left seal receptacle and the upper surface of bottom right seal receptacle 54 are all provided with the rhone 57 with chimney 1 ft connection.
See Fig. 7, the upper surface of bottom sealing socket (i.e. lower-left seal receptacle and bottom right seal receptacle) and the lower surface of upper seal support (i.e. upper left seal receptacle, middle upper seal support and upper right seal receptacle) be all provided with some along rotating shaft 4(see Fig. 1) axially extended sealing ditch 58.
During use,
See Fig. 1, the first rotating shaft 41 is driven to rotate by handle 32 or motor 31.
See Fig. 2, while the first rotating shaft 41 drives the folding of right outside side door plate 24, the second rotating shaft 42, the 3rd rotating shaft 43 and the 3rd rotating shaft 44 is driven to rotate by transmission mechanism 33.Second rotating shaft 42 drives Right Inboard door-plate 23 folding.3rd rotating shaft 43 drives the folding of left inside side door plate 22.4th rotating shaft 44 drives left-external side door-plate 21 folding.
See 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 mode that left end height right-hand member is low; 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 mode that right-hand member height left end is low; 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 mode that left end height right-hand member is low; 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 mode that right-hand member height left end is low.
See Fig. 6, the rainwater on door-plate 2 to be pooled in rhone 57 two automatically, and to flow to chimney 1 outside.
See Fig. 7, be linear sealing between sealing ditch 58 and door-plate 2.
See Fig. 1, when door-plate 2 closes up completely (namely covering chimney), indicating arm 45 is the level of state.When door-plate 2 is opened completely, indicating arm 45 is in vertical state.User can by the folding degree of the condition adjudgement door-plate 2 of indicating arm 45.
Embodiment two, the difference with embodiment one is:
See Fig. 8, in door-plate 2, be provided with cavity 58.Cavity 58 is annular seal space.Cavity 58 all exceeds rotating shaft 4 along the radial two ends of rotating shaft 4.Cavity 58 is provided with the check valve 50 opened towards cavity outside.Cavity 58 is built with moveable balance weight 59.Door-plate 2-in-1 hold together time, cavity 58 tilts in the mode of the one end being positioned at bottom sealing socket lower than the other end.The moment that balance weight 59 produces and door-plate 2(containing the annex be connected on door-plate as reinforcement rotating shaft etc.) the moment sum that produces makes door-plate 2 remain on closed configuration.When same door-plate 2 is opened, the moment that balance weight 59 produces and the moment sum that door-plate produces make door-plate 2 remain on stable state of opening.
See Fig. 9, sealing ditch 57 is the enclosed construction of closed at both ends; Door-plate 2-in-1 hold together time, have at least the surrounding of a sealing ditch 57 to be sealed connected together with door-plate 2, make the adsorbent chamber forming sealing between seal receptacle 5 and door-plate.
Claims (8)
1. a flue damper door, comprise the door-plate of capping chimney and drive the driving mechanism of door-plate folding, described door-plate is provided with rotating shaft, it is characterized in that, it is two right that described door-plate has, two panels door-plate subtend in same end of door plate is opened, three upper seal supports and two bottom sealing sockets are provided with in described chimney, two bottom sealing sockets lay respectively at the joint of the two panels door-plate 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 two joints of adjacent door-plate between end of door plate, described bottom sealing socket upper surface is provided with the rhone with chimney ft connection, when described door-plate closes up, door-plate one end overlaps and is sealedly connected on the upper surface of described bottom sealing socket, the other end overlaps and is sealedly attached to the lower surface of described upper seal support, door-plate upper surface is low with the one end connected with described bottom sealing socket, the mode that the other end is high tilts, described driving mechanism comprises the first rocking arm that head and the tail are hinged successively, first short connecting rod, first swing arm, long connecting rod, second swing arm, 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, second rotating shaft, 3rd rotating shaft and the 4th rotating shaft and radial direction along chimney distribute successively, first rotating shaft is coaxial and be fixed together with the first rocking arm, second rotating shaft is coaxial and be fixed in the middle part of the first swing arm with the first swing arm, 4th rotating shaft is coaxial and be fixed in the middle part of the second swing arm with the second swing arm, 3rd rotating shaft is coaxial and be fixed together with the second rocking arm, 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.
2. flue damper 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, be linear sealing between described sealing ditch and described door-plate.
3. flue damper 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, and described sealing ditch is the enclosed construction of closed at both ends; When door-plate closes up, the surrounding of a described sealing ditch is had at least to be sealed connected together with described door-plate.
4. the flue damper door according to claim 1 or 2 or 3, it is characterized in that, the upper surface of described door-plate is provided with some reinforcements, forms gutter between adjacent reinforcement, described rotating shaft is fixed in described reinforcement, is provided with gap between described rotating shaft and described door-plate.
5. the flue damper door according to claim 1 or 2 or 3, is characterized in that, be provided with cavity in described door-plate, and described cavity all exceeds described rotating shaft along the radial two ends of described rotating shaft, and described cavity is built with moveable balance weight; When described door-plate closes up, described cavity tilts in the mode of the one end being positioned at bottom sealing socket lower than the other end, and the moment that described balance weight produces and the moment sum that described door-plate produces make described door-plate remain on closed configuration; When described door-plate is opened, the moment that described balance weight produces and the moment sum that described door-plate produces make described door-plate remain on opening.
6. flue damper door according to claim 5, is characterized in that, described cavity is annular seal space, and described cavity is provided with the check valve opened towards cavity outside.
7. the flue damper door according to claim 1 or 2 or 3, described driving mechanism also comprises the motor and handle that link together with described first rotating shaft.
8. the flue damper door according to claim 1 or 2 or 3, 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 is linked together by Compress Spring and described door-plate telescopically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004709.9A CN103982901B (en) | 2014-01-07 | 2014-01-07 | Flue damper door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410004709.9A CN103982901B (en) | 2014-01-07 | 2014-01-07 | Flue damper door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103982901A CN103982901A (en) | 2014-08-13 |
| CN103982901B true CN103982901B (en) | 2016-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410004709.9A Active CN103982901B (en) | 2014-01-07 | 2014-01-07 | Flue damper door |
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| CN (1) | CN103982901B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485657A (en) * | 2015-04-28 | 2016-04-13 | 无锡华光锅炉股份有限公司 | Coal economizer bypass flue structure |
| CN106196122A (en) * | 2016-07-26 | 2016-12-07 | 无锡市华通电力设备有限公司 | A kind of baffle board door of flue having from decompression function |
| CN108278627B (en) * | 2018-01-24 | 2023-09-08 | 宁波世茂能源股份有限公司 | Large-scale flue does not have leakage sealing system |
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| CN2692505Y (en) * | 2003-10-22 | 2005-04-13 | 刘明学 | Opposite direction type chimney baffer plate |
| CN201106859Y (en) * | 2007-09-11 | 2008-08-27 | 中国神华能源股份有限公司 | Adjustable rapid-opening unification type smoke damper door |
| CN201382432Y (en) * | 2009-03-20 | 2010-01-13 | 杭州杭锅通用设备有限公司 | Main chimney baffle door |
| CN202018051U (en) * | 2011-01-14 | 2011-10-26 | 无锡市华通环保设备有限公司 | Double eccentric turning board type hot blast isolation door |
| CN103134061A (en) * | 2011-12-01 | 2013-06-05 | 溧阳市恒祥特钢机械制造有限公司 | Flue baffle |
| GB2499976A (en) * | 2012-01-12 | 2013-09-11 | William Charles Kyle Jones | Chimney damper with mounting elements |
| CN203687070U (en) * | 2014-01-07 | 2014-07-02 | 杭州杭锅通用设备有限公司 | Chimney damper door |
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2014
- 2014-01-07 CN CN201410004709.9A patent/CN103982901B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2692505Y (en) * | 2003-10-22 | 2005-04-13 | 刘明学 | Opposite direction type chimney baffer plate |
| CN201106859Y (en) * | 2007-09-11 | 2008-08-27 | 中国神华能源股份有限公司 | Adjustable rapid-opening unification type smoke damper door |
| CN201382432Y (en) * | 2009-03-20 | 2010-01-13 | 杭州杭锅通用设备有限公司 | Main chimney baffle door |
| CN202018051U (en) * | 2011-01-14 | 2011-10-26 | 无锡市华通环保设备有限公司 | Double eccentric turning board type hot blast isolation door |
| CN103134061A (en) * | 2011-12-01 | 2013-06-05 | 溧阳市恒祥特钢机械制造有限公司 | Flue baffle |
| GB2499976A (en) * | 2012-01-12 | 2013-09-11 | William Charles Kyle Jones | Chimney damper with mounting elements |
| CN203687070U (en) * | 2014-01-07 | 2014-07-02 | 杭州杭锅通用设备有限公司 | Chimney damper door |
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| CN103982901A (en) | 2014-08-13 |
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