CN102635300B - Shutter baffle door provided with sealing device - Google Patents
Shutter baffle door provided with sealing device Download PDFInfo
- Publication number
- CN102635300B CN102635300B CN201210116504.0A CN201210116504A CN102635300B CN 102635300 B CN102635300 B CN 102635300B CN 201210116504 A CN201210116504 A CN 201210116504A CN 102635300 B CN102635300 B CN 102635300B
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- CN
- China
- Prior art keywords
- doorframe
- flexible seals
- airduct
- rotating shaft
- baffle door
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
The invention discloses a shutter baffle door provided with a sealing device and belongs to the field of smoke gas treatment devices. The shutter baffle door comprises a door frame, at least one rotating shaft arranged on the door frame, and a baffle driven by the rotating shaft, wherein the inner edge of the door frame is wound with a flexible sealing piece; a cavity is defined between the flexible sealing piece and the inner edge of the door frame; the door frame is provided with a first air pipe communicated with the cavity; an open slot matched with the flexible sealing piece is arranged around the outer edge of the baffle; the door frame is provided with a second air pipe running through the flexible sealing piece and communicated with the open slot, and the second air pipe is tightly matched with the flexible sealing piece. The shutter baffle door is used in an air inlet flue, an air outlet flue and a bypass flue in a flue gas desulfurization device, and is good in sealing effect, simple in structure and convenient to operate.
Description
Technical field
The present invention relates to smoke gas treatment apparatus field, be specifically related to a kind of louver type baffle door with sealing device.
Background technology
The two louver type damper doors of single shaft adopt P shape shell fragment hermetically-sealed construction or overlapping shell fragment hermetically-sealed construction conventionally at present, the Chinese utility model patent that for example notification number is CN200978606Y discloses a kind of sealing device of louver type baffle door, is the inner sealing device on a kind of louver type damper door cutting off for gas.The technical scheme providing according to this utility model, rotating some blades are installed in doorframe, transverse ends at every blade arranges rotating shaft, blade utilizes rotating shaft and doorframe to be rotationally connected, on the mating face of adjacent two blades, elastic sealing strip is set, the fixed end of this elastic sealing strip is arranged on longitudinal both sides of blade, the movable end of diaphragm seal is along the plane of the blade segment length that stretches out, at adjacent two blades, during in closure state, wherein the movable end of the elastic sealing strip on a blade rides on another piece blade.This device is arranged on to the two ends of blade of louver window surrounding and blade rotor, in the time that blade is closed, can plays the effect of good hermetically closing, effectively improved sealing effectiveness.
Above hermetically-sealed construction can play the effect of good hermetically closing in actual use procedure, has effectively improved sealing effectiveness, but usually has following defect:
(1) a period of time backboard door sealing that puts into operation can not ensure 100% sealing.In running, be subject to the impact of operating mode (temperature, pressure, corrosion etc.), weather strip is easily out of shape and causes actual gap much larger than design load (0.3mm), more than conventionally can reaching 1mm, and even 10mm.
(2) P shape thin slice moves for a long time normal appearance breakage and lost efficacy in tension force and burn into friction environment, and its seal clearance is difficult to ensure card more.
(3) seal fan type selecting air quantity (calculated gap value is at least 0.3mm) bigger than normal, and because actual gap is difficult to ensure conventionally, the sealing air quantity that when gap enlargement, cavity passes into is nowhere near and causes the sealing function of sealing air to lose efficacy.
(4) easily damaged in main member (P shape shell fragment or overlapping shell fragment) selection very thin (0.25mm) manufacture conventionally, transportation.
(5) main member (P shape shell fragment or overlapping shell fragment) is special stainless steel, and manufacturing cost and repair and replacement cost are higher.
(6) main member (P shape shell fragment or overlapping shell fragment) is shorter application life, conventionally less than 1 year.
(7) hermetically-sealed construction maintenance causes former sealing effectiveness to recover completely because of the distortion of door-plate etc. after changing.
(8) manufacture assembly precision and have relatively high expectations, conventionally need to regulate its assemblage gap.
Summary of the invention
The invention provides a kind of louver type baffle door with sealing device, cost is low, and good sealing effect is simple in structure, easy to process.
A kind of louver type baffle door with sealing device, comprise doorframe, be arranged at least one rotating shaft on described doorframe and the baffle plate being driven by this rotating shaft, inner edge around described doorframe is provided with flexible seals, between this flexible seals and described doorframe inner edge, surround cavity, described doorframe is provided with the first airduct being communicated with this cavity.
Baffle plate is arranged on the inner side of doorframe by rotating shaft, drive baffle plate to rotate the switching that realizes baffle door by rotating shaft, when turning to, baffle plate when baffle plate foreign aid contacts with doorframe inner edge, realizes closing of baffle door, when closing, baffle door need to make to seal between baffle plate and doorframe, reduce the leakage of flue gas as far as possible, in the present invention, in the time of baffle plate and doorframe closure, in the cavity surrounding to flexible seals and doorframe by the first airduct, pass into sealing air, flexible seals on doorframe inner edge is heaved, baffle plate foreign aid by the flexible seals after heaving even at the cost of one's life, the bulge height of flexible seals can make up the deficiency of machining accuracy, strengthen sealing effectiveness, prevent the leakage of flue gas.
Baffle door of the present invention is mainly used in the inlet flue duct of flue gas desulfur device, in exhaust pass and bypass flue, if the sealing effectiveness of baffle door is bad, can bring a lot of negative effects to sulfur removal technology, therefore in order to make the sealing effectiveness of baffle door reach optimum, accomplish zero leakage, the present invention adopts a kind of preferred technical scheme, be provided with the open slot coordinating with described flexible seals around the outer rim of described baffle plate, described doorframe is provided with the second airduct that runs through flexible seals, and this second airduct is communicated with described open slot, the contact portion of described the second airduct and flexible seals is sealed and matched.
In the time that baffle door is closed, in the cavity surrounding to flexible seals and doorframe by the first airduct, pass into sealing air, now flexible seals is heaved, contact open slot is sealed with the opening part of open slot, between open slot and the flexible seals of heaving, surround the cavity of a relative sealing, in this cavity, pass into sealing air by the second airduct, pressure in cavity between the flexible seals that makes pressure in cavity that flexible seals and doorframe surround be greater than open slot and to heave, the two is mutually worked in coordination with and makes to seal between baffle plate and doorframe, what isolated flue gas was shown in by superfine microgap gangs up, reach flue gas zero leakage.Gap between flexible seals and open slot is minimum, and system sealing invisible waste amount is very little, can ensure for a long time 100% sealing of baffle door, and can reduce system operation cost.
May there is in use for some time the situations such as damaged in flexible seals, need to be removed for repair or replacement, therefore in order to facilitate the dismounting of flexible seals, be provided with two installing plates that are parallel to each other along described doorframe inner edge, the dual-side of described flexible seals is separately fixed on corresponding installing plate.
Described installing plate has towards the side edge of baffle plate the support cambered surface that is resisted against described flexible seals inner side.Support the turning point that cambered surface could better support and protect flexible seals, avoid knuckle to damage.
Installing plate described herein is towards the side edge of baffle plate, and finger stop plate is under closed condition.
For the ease of forming described support cambered surface, can towards the side edge of baffle plate, support bar be set at described installing plate, the dual-side of described flexible seals is separately fixed on corresponding support bar.And the cross section of described support bar is " P " font.The outside of " P " font head is described support cambered surface.
The support bar that described in when use, cross section is " P " font is inverted and is fixed on installing plate, and the projection of two support bars is relative.
The support bar that cross section is " P " font can better support and protect flexible seals, avoids flexible seals to damage.Between described support bar and open slot closest approach, except flexible seals thickness, need leave suitable gap, while facilitating the switching motion of baffle plate, not touch.
Described support bar is fixed on corresponding installing plate.Support bar and flexible seals are fixed on this installing plate by securing member, securing member comprises pressing plate and bolt assembly, support bar is positioned at the inner side of installing plate, flexible seals and pressing plate are positioned at the outside of installing plate successively, and support bar, installing plate, flexible seals and pressing plate are fixed by bolt assembly.In the time that flexible seals breakage need to be changed, only need to unclamp bolt assembly, replace with assembling successively again after new flexible seals, convenient and swift, general technical operation personnel just can complete, and entreprise cost is low.
In the time that baffle plate engages with doorframe, in the cavity surrounding between the cavity surrounding to flexible seals and doorframe inner edge and open slot and the flexible seals heaved, pass into air, realize sealing, in the time that needs are opened, take out the sealing air in the cavity that flexible seals and doorframe inner edge surround, baffle plate rotates with rotating shaft, therefore the passing into or extract out and need to synchronously carry out of the rotation of baffle plate and air.
Therefore, as the preferred technical scheme of one, in described the first airduct and the second airduct, be respectively equipped with valve, described rotating shaft extend part outside doorframe by drive disk assembly respectively with the switch gearing of described valve.Drive disk assembly generally adopts linkage, first connecting rod mechanism interlock for the valve in rotating shaft and the first airduct, and the valve in rotating shaft and the second airduct links by second connecting rod mechanism; Valve in the first airduct and the second airduct can adopt any valve that can meet technological requirement, generally adopts butterfly valve more.
The end that described rotating shaft is extended outside doorframe is connected with YE and rotates handwheel., while normally operation, automatically control by YE, convenient and swift, in the time of overhaul of the equipments, realize the rotation of baffle plate by hand wheel rotating rotating shaft.
In order to adapt to different flue demands, described baffle plate and rotating shaft are corresponding at least two groups that arrange, and all rotating shafts link mutually.Now between two adjacent baffle plates, be provided with the connection cross bar being fixed on doorframe, connect on cross bar and be also provided with flexible seals, and the flexible seals of the flexible seals on cross bar and doorframe inner edge is structure as a whole, the cavity that they surround with doorframe inner edge is communicated with as a whole.
Flexible seals is the soft nonmetals that are fixed on doorframe inner edge and have certain thickness, solid, corrosion-resistant, high pressure resistant, high temperature resistant, micro-elasticity, a kind of preferred technical scheme, described flexible seals is covering, the inner edge of covering and doorframe surrounds cavity, passes into for sealing air.Covering has the soft nonmetals of certain thickness, solid, corrosion-resistant, micro-elasticity, durable in use, not cracky.
Beneficial effect of the present invention is as follows:
Baffle door of the present invention is simple in structure, and difficulty of processing is lower, and installation accuracy requirement etc. are all lower.Material is unsuitable damaged, and installation and transportation process is convenient; Sealing more easily ensures, flexible covering can better be guaranteed contact gap; When seal fan type selecting, air quantity can reduce greatly, thereby reduces system operation cost; Application life is relatively long; After repair and maintenance (covering replacing), former sealing effectiveness keeps; Manufacturing cost and maintenance cost are all lower.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is that A shown in Fig. 1 is to view;
Fig. 3 is that B shown in Fig. 1 is to view;
Fig. 4 is that the part of C shown in Fig. 2 is removed the enlarged drawing (now baffle door is in closing sealing state) after the first airduct;
Fig. 5 is that the part of C shown in Fig. 2 is removed the enlarged drawing (now baffle door is in opening) after the first airduct.
In accompanying drawing, each Reference numeral is as follows:
1-doorframe 2-testing tube 3-baffle plate 4-the first airduct
The 5-first connecting rod 6-of mechanism is from axle 7-position-limit mechanism 8-YE
The 9-main shaft 10-second connecting rod 11-of mechanism the second airduct 12-flexible seals (covering)
13-open slot 14-pressing plate 15-bolt assembly 16-support bar
Detailed description of the invention
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, a kind of louver type baffle door with sealing device, comprise doorframe 1, be arranged on the baffle plate 3 on doorframe 1 by rotating shaft, baffle plate 3 can be set to one or more as required, and present embodiment describes as example so that two baffle plates 3 to be set.
Doorframe 1 is by rectangular frame and be positioned at the connection cross bar that connects relative both sides in the middle of rectangle frame and form, in doorframe 1 inner side by two baffle plates 3 of rotating shaft (main shaft 9 and from axle 6) fixed installation, YE 8 is arranged in a side of doorframe 1, on the opposite side doorframe 1 relative with YE 8 is installed, be provided with the second airduct 11 of built-in butterfly valve, the top of doorframe 1 is provided with the first airduct 4 of built-in butterfly valve near the side that YE 8 is installed.
In the side that YE 8 is installed, main shaft 9 and from axle 3 all extends doorframe 1, between butterfly valve in main shaft 9 and the part from axle 6 extends doorframe 1 and the first airduct 4, link by first connecting rod mechanism 5, be provided with position-limit mechanism 7 from axle 6, the end of main shaft 9 is connected with YE 8; Also extend doorframe 1 from the other end of axle 6, be positioned at homonymy with the second airduct 11, butterfly valve in the second airduct 11 links by second connecting rod mechanism 10 with the part of extending this side from axle 6, main shaft 9, controls from carrying out interlock between the butterfly valve in axle 6, the first airduct 4 and the second airduct 11.
Doorframe 1 is provided with the testing tube 2 for testing.
Flexible seals 12 in the present embodiment on doorframe 1 inner side adopts covering, two of welding and the perpendicular installing plate of doorframe 1 inner edge are parallel to each other on the inner edge of doorframe 1, the dual-side edge of flexible seals 12 is sealed and is fixed on this installing plate by securing member, securing member comprises pressing plate 14 and bolt assembly 15, and the inner edge of flexible seals 12 and doorframe 1 encloses cavity one jointly.
In doorframe 1, be positioned at the middle cross bar of rectangular frame and also can doublely do installing plate, cross bar is two that are arranged in parallel, and both are with the gapped upper and lower two-part cavity one of cross bar that makes to be interconnected.
In order to protect flexible seals 12, cross bar cross section has oval-shaped outline, and oval outline is resisted against flexible seals 12 inner sides towards the part of baffle plate and forms support cambered surface.
At the inner edge place of rectangular frame part, for the ease of fixing of flexible seals 12, on installing plate, be also fixed with support bar 16, support bar 16 is positioned at flexible seals 12, support bar 16 is fixed on the inner side of installing plate, flexible seals 12 is fixed on the outside of installing plate, and support bar 16, installing plate, flexible seals 12, pressing plate 14 contact successively, fixing by bolt assembly 15.
It is the support bar of " P " font that support bar 16 adopts cross section; the support bar that this cross section is " P " font is inverted and is fixed on installing plate; on two installing plates, be all fixed with the support bar that this cross section is " P " font; the projection of the support bar that these two cross sections are " P " font is relative; " P " font head abuts forms and supports cambered surface in covering inner side; while bleeding in to cavity one, better support and protect covering, avoid knuckle to damage.
In the time that baffle plate 3 only has one, omit at cross bar position, only has rectangular frame part, all adopts the support bar of be parallel to each other two installing plates and " P " font to fix flexible seals 12 at the inner edge place of rectangular frame part.
On the mating face of baffle plate 3 and doorframe 1, be welded with open slot 13, the opening that this open slot 13 is arranged to cave inward away from a side of baffle plate 3, this opening is just in time relative with the external surface of flexible seals 12, in the time that flexible seals 12 is heaved, just in time this opening is sealed, open slot 13 and the flexible seals 12 of heaving form the cavity two of relative closure.Between the bottom surface of support bar 16 and the closest approach of open slot 13.Except the thickness of flexible seals 12, need leave suitable gap, while facilitating the keying of baffle plate 3, do not touch.
Cavity one in whole doorframe 1 is communicated with as a whole, the first airduct 4 is communicated with cavity one, the cavity two being made up of open slot 13 and the flexible seals 12 of heaving on two baffle doors 3 is two separate cavitys, and the second airduct 11 is communicated with the cavity two on two baffle doors 3 respectively through doorframe 1 and cavity one successively by two connecting branches.The part that the second airduct 11 contacts with flexible seals 12 through cavity one is for being tightly connected.
The end of main shaft 9 is also provided with rotates handwheel (not shown), while maintenance, uses for flue.
Using method of the present invention and sealing principle are as follows:
Control YE 8, interlock controls main shaft 9, from the butterfly valve in axle 6, the first airduct 4 and the second airduct 11.
When baffle door of the present invention is closed, sprain to press in the cavity one that flexible seals 12 and doorframe 1 inner edge surround by the first airduct 4 and pass into sealing air, flexible seals 12 is heaved just in time by the 13 opening part sealings of the open slot on baffle plate 3, open slot 13 and the flexible seals 12 of heaving surround the cavity two of relative sealing, in cavity two, pass into sealing air by the second airduct 11, pressure in cavity one is greater than the pressure in cavity two and the blast of the higher side of baffle plate 3 pressure at both sides that is greater than, the contact of the flexible seals 12 of heaving and the opening part of open slot 13 realizes flexible sealing is combined, as shown in Figure 4, what isolated flue gas was shown in by superfine microgap gangs up, this seal form can ensure 100% sealing of baffle door for a long time.
Before baffle door switching motion, by the first airduct 4 to bleeding in flexible seals 12, flexible seals 12 shrinks, reserve the gap with open slot 13, as shown in Figure 5, facilitate opening of baffle plate 3, also prevent from damaging flexible seals 12 because of friction, after switching motion finishes, the first airduct 4 and the second airduct 11 are closed.
Flexible seals 12 is for having the soft nonmetals of certain thickness, solid, corrosion-resistant, micro-elasticity, durable in use, not cracky.
Except covering, other any energy meet all alternative coverings of soft nonmetals with certain thickness, solid, corrosion-resistant, high pressure resistant, high temperature resistant, micro-elasticity.
The foregoing is only better implementation example of the present invention, be not limited to the present invention, all within the present invention spirit and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. the louver type baffle door with sealing device, comprise doorframe (1), be arranged at least one rotating shaft on described doorframe (1) and the baffle plate (3) being driven by this rotating shaft, it is characterized in that, be provided with flexible seals (12) around the inner edge of described doorframe (1), between this flexible seals (12) and described doorframe (1) inner edge, surround cavity, described doorframe (1) is provided with the first airduct (4) being communicated with this cavity; Be provided with the open slot (13) coordinating with described flexible seals (12) around the outer rim of described baffle plate (3), described doorframe (1) is provided with the second airduct (11) that runs through flexible seals (12), and this second airduct (11) is communicated with described open slot (13), described the second airduct (11) is sealed and matched with the contact portion of flexible seals (12).
2. louver type baffle door according to claim 1, is characterized in that, is provided with two installing plates that are parallel to each other along described doorframe (1) inner edge, and the dual-side of described flexible seals (12) is separately fixed on corresponding installing plate.
3. louver type baffle door according to claim 2, is characterized in that, described installing plate has towards the side edge of baffle plate (3) the support cambered surface that is resisted against described flexible seals (12) inner side.
4. according to the louver type baffle door described in the arbitrary claim of claim 1～3, it is characterized in that, in described the first airduct (4) and the second airduct (11), be respectively equipped with valve, described rotating shaft extend the outer part of doorframe (1) by drive disk assembly respectively with the switch gearing of described valve.
5. louver type baffle door according to claim 4, is characterized in that, described rotating shaft is extended the outer end of doorframe (1) and is connected with YE (8) and rotates handwheel.
6. louver type baffle door according to claim 5, is characterized in that, described baffle plate (3) and rotating shaft are corresponding at least two groups that arrange, and all rotating shafts link mutually.
7. louver type baffle door according to claim 5, is characterized in that, described flexible seals (12) is covering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116504.0A CN102635300B (en) | 2012-04-19 | 2012-04-19 | Shutter baffle door provided with sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210116504.0A CN102635300B (en) | 2012-04-19 | 2012-04-19 | Shutter baffle door provided with sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102635300A CN102635300A (en) | 2012-08-15 |
| CN102635300B true CN102635300B (en) | 2014-08-06 |
Family
ID=46619862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210116504.0A Expired - Fee Related CN102635300B (en) | 2012-04-19 | 2012-04-19 | Shutter baffle door provided with sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102635300B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2700885B1 (en) * | 2012-08-25 | 2015-06-17 | CB-tec GmbH | Air feed wall bushing |
| CN104265123B (en) * | 2014-07-31 | 2015-11-18 | 无锡欧易博阀业科技有限公司 | There is the hermatic door of auto-switch function |
| CN105422879A (en) * | 2015-06-24 | 2016-03-23 | 丁毅 | Air bag sealing type partition door |
| CN105020413A (en) * | 2015-06-24 | 2015-11-04 | 丁毅 | Sealing baffle door |
| CN104948750A (en) * | 2015-06-24 | 2015-09-30 | 丁毅 | Damper sealing structure |
| CN106641291B (en) * | 2017-01-03 | 2018-11-16 | 南通艾迈特机械有限公司 | A kind of damper sealing structure |
| CN107062284A (en) * | 2017-03-13 | 2017-08-18 | 江苏中热机械设备有限公司 | Soft sealing type baffle ventilation door |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0702125A1 (en) * | 1994-09-17 | 1996-03-20 | Harry Frey | Magnetic sealing strip for a door |
| CN200978606Y (en) * | 2006-12-08 | 2007-11-21 | 陆纪清 | Louver window baffle plate door sealing device |
| CN201588508U (en) * | 2010-01-28 | 2010-09-22 | 江麓机电科技有限公司 | Double window linkage shutter apparatus |
| CN202659107U (en) * | 2012-04-19 | 2013-01-09 | 浙江天蓝环保技术股份有限公司 | Louver damper gate with seal device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8413378B2 (en) * | 2007-11-23 | 2013-04-09 | Maxxmar Inc. | Louvre blade seal |
-
2012
- 2012-04-19 CN CN201210116504.0A patent/CN102635300B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0702125A1 (en) * | 1994-09-17 | 1996-03-20 | Harry Frey | Magnetic sealing strip for a door |
| CN200978606Y (en) * | 2006-12-08 | 2007-11-21 | 陆纪清 | Louver window baffle plate door sealing device |
| CN201588508U (en) * | 2010-01-28 | 2010-09-22 | 江麓机电科技有限公司 | Double window linkage shutter apparatus |
| CN202659107U (en) * | 2012-04-19 | 2013-01-09 | 浙江天蓝环保技术股份有限公司 | Louver damper gate with seal device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102635300A (en) | 2012-08-15 |
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Granted publication date: 20140806 |