CN102635300A - Shutter baffle door provided with sealing device - Google Patents
Shutter baffle door provided with sealing device Download PDFInfo
- Publication number
- CN102635300A CN102635300A CN2012101165040A CN201210116504A CN102635300A CN 102635300 A CN102635300 A CN 102635300A CN 2012101165040 A CN2012101165040 A CN 2012101165040A CN 201210116504 A CN201210116504 A CN 201210116504A CN 102635300 A CN102635300 A CN 102635300A
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- doorframe
- flexible seals
- airduct
- baffle door
- rotating shaft
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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. 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 the smoke gas treatment apparatus field, be specifically related to a kind of louver type baffle door with sealing device.
Background technology
The two multiple damper gate opens of single shaft often adopt P shape shell fragment hermetically-sealed construction or overlapping shell fragment hermetically-sealed construction at present; For example notification number is the sealing device that the Chinese utility model patent of CN200978606Y discloses a kind of louver type baffle door, is a kind of inner sealing device that is used on the multiple damper door that gas cuts off.The technical scheme that provides according to this utility model; Rotating some blades are installed in doorframe; Transverse ends at every blade is provided with rotating shaft, and blade utilizes rotating shaft and doorframe to be rotationally connected, and on the mating face of adjacent two blades, elastic sealing strip is set; The fixed end of this elastic sealing strip is installed in vertical both sides of blade; The movable end of the diaphragm seal segment length that stretches out along the plane of blade, when adjacent two blades were in closure state, wherein the movable end of the elastic sealing strip on blade rode on another piece blade.Be installed in around the blade of louver window this device and the two ends of blade rotor, when blade is closed, can play the effect of good hermetically closing, improved sealing effectiveness effectively.
Above hermetically-sealed construction can play the effect of good hermetically closing in the use of reality, improved sealing effectiveness effectively, but following defective is usually arranged:
(1) put into operation a period of time backboard door sealing property can not guarantee 100% the sealing.In the running, receive the influence of operating mode (temperature, pressure, corrosion etc.), weather strip easy deformation and cause actual gap much larger than design load (0.3mm) can reach more than the 1mm usually, even 10mm.
(2) operation is normal in tension force and burn into friction environment for a long time occurs damaged and lost efficacy for P shape thin slice, and its seal clearance cannot say for sure card more.
(3) seal fan type selecting air quantity (the calculated gap value is at least 0.3mm) bigger than normal, and because of actual gap be difficult to guarantee usually, the sealing air quantity that cavity feeds during gap enlargement are nowhere near and the sealing function that causes sealing wind lost efficacy.
(4) damaged easily in main member (P shape shell fragment or overlapping shell fragment) selection very thin (0.25mm) manufacturing usually, the transportation.
(5) main member (P shape shell fragment or overlapping shell fragment) is a 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, and less than is 1 year usually.
(7) hermetically-sealed construction maintenance is changed the back and is caused former sealing effectiveness to recover fully because of the distortion of door-plate etc.
(8) make assembly precision and have relatively high expectations, need to regulate its assemblage gap usually.
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, and is easy to process.
A kind of louver type baffle door with sealing device; Comprise doorframe, be installed at least one rotating shaft on the said doorframe and the baffle plate that drives by this rotating shaft; Inner edge around said doorframe is provided with flexible seals; Surround cavity between this flexible seals and the described doorframe inner edge, said doorframe is provided with first airduct that is communicated with this cavity.
Baffle plate is installed in the inboard of doorframe through rotating shaft, drives baffle plate through rotating shaft and rotates the switching that realizes baffle door, realizes closing of baffle door when the baffle plate foreign aid contacts with the doorframe inner edge when baffle plate turns to; Need make between baffle plate and the doorframe when baffle door is closed to seal, reduce the leakage of flue gas, among the present invention as far as possible; When baffle plate and doorframe are closed, in the cavity that flexible seals and doorframe surround, feed sealing air through first airduct, the flexible seals on the doorframe inner edge is heaved; The 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 remedy the deficiency of machining accuracy, strengthens sealing effectiveness, prevents the leakage of flue gas.
Baffle door of the present invention is mainly used in inlet flue duct, exhaust pass and the bypass flue of flue gas desulfur device; If the sealing effectiveness of baffle door is bad, can bring a lot of negative effects to sulfur removal technology, therefore reach optimum for the sealing effectiveness that makes baffle door; Accomplish zero leakage; The present invention adopts a kind of optimized technical scheme, is provided with the open slot that cooperates with said flexible seals around the outer rim of said baffle plate, and described doorframe is provided with second airduct that runs through flexible seals; And this second airduct is communicated with said open slot, and the contact portion of said second airduct and flexible seals is sealed and matched.
When baffle door is closed; In the cavity that flexible seals and doorframe surround, feed sealing air through first airduct, this moment, flexible seals was heaved, and contacted with the opening part of open slot open slot is sealed; Surround a cavity of sealing relatively between open slot and the flexible seals heaved; In this cavity, feed sealing air through second airduct, make pressure in the cavity that flexible seals and doorframe surround greater than the pressure in the cavity between open slot and the flexible seals of heaving, the two is worked in coordination with to make between baffle plate and the doorframe each other and seals; Isolated flue gas is ganged up through what superfine microgap was seen, reaches the flue gas zero leakage.Gap between flexible seals and the open slot is minimum, and system sealing invisible waste amount is very little, can guarantee 100% sealing of baffle door for a long time, and can reduce system operation cost.
Situation such as breakage may appear in flexible seals in use for some time; Need dismounting maintenance or replacing; Therefore the dismounting of flexible seals for ease; Be provided with the two parallel installing plate along described doorframe inner edge, the dual-side of said flexible seals is separately fixed on the corresponding installing plate.
Said installing plate is resisted against the inboard support cambered surface of said flexible seals towards the side of baffle plate along having.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 the finger stop plate is under the closed condition.
For the ease of forming described support cambered surface, can towards the side edge of baffle plate support bar be set at said installing plate, the dual-side of said flexible seals is separately fixed on the 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.
Said cross section is inverted for the support bar of " P " font and is fixed on the installing plate during use, and the projection of two support bars is relative.
Flexible seals can better supported and protect in the cross section for the support bar of " P " font, avoids flexible seals to damage.Between said support bar and the open slot closest approach, except that flexible seals thickness, need leave suitable gap, not touch when making things convenient for the switching motion of baffle plate.
Said support bar is fixed on the corresponding installing plate.Support bar and flexible seals are fixed on this installing plate through securing member; Securing member comprises pressing plate and bolt assembly; Support bar is positioned at the inboard 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 through bolt assembly.When the flexible seals breakage need to be changed, only need unclamp bolt assembly, assemble successively behind the new flexible seals replacings in again and get final product, convenient and swift, general technical operation personnel just can accomplish, and entreprise cost is low.
When baffle plate engages with doorframe; Bubbling air in the cavity that between cavity that flexible seals and doorframe inner edge surround and open slot and the flexible seals heaved, surrounds; Realize sealing, when needs are opened, take out the interior sealing air of cavity that flexible seals and doorframe inner edge surround; Baffle plate rotates with rotating shaft, so the feeding of the rotation of baffle plate and air or extraction need be carried out synchronously.
Therefore,, be respectively equipped with valve in said first airduct and second airduct as a kind of optimized technical scheme, said rotating shaft extend the outer part of doorframe through drive disk assembly respectively with the switch gearing of said valve.Drive disk assembly generally adopts linkage, and the valve in the rotating shaft and first airduct is with the interlock of first connecting rod mechanism, and the valve in the rotating shaft and second airduct is through the interlock of second connecting rod mechanism; Valve in first airduct and second airduct can adopt any valve that can satisfy technological requirement, generally adopts butterfly valve more.
The end of said rotating shaft is connected with YE and rotates handwheel, when normally moving, controls automatically through YE, and is convenient and swift, when overhaul of the equipments, realizes the rotation of baffle plate through the handwheel rotating shaft.
In order to adapt to different flue demands, described baffle plate and rotating shaft are corresponding at least two groups that are provided with, and all rotating shafts link each other.Between two adjacent baffle plates, be provided with the connection cross bar that is fixed on the doorframe this moment; Connect on the cross bar and also be provided with flexible seals; And the flexible seals of flexible seals on the cross bar and doorframe inner edge is structure as a whole, and they are communicated with as a whole with the cavity that the doorframe inner edge surrounds.
Flexible seals is the soft nonmetals that are fixed on the doorframe inner edge and have certain thickness, solid, corrosion-resistant, high pressure resistant, high temperature resistant, micro-elasticity; A kind of optimized technical scheme; Described flexible seals is a covering; The inner edge of covering and doorframe surrounds cavity, supplies sealing air to feed.Covering has the soft nonmetals of certain thickness, solid, corrosion-resistant, micro-elasticity, and is durable in use, not cracky.
Beneficial effect of the present invention is following:
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, the installation and transportation process convenient; Sealing guarantees that more easily flexible covering can better be guaranteed contact gap; Air quantity can reduce greatly during the seal fan type selecting, thereby reduces system operation cost; Application life is longer relatively; The former sealing effectiveness in repair and maintenance (covering replacing) back keeps; Manufacturing cost and maintenance cost are all lower.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that A shown in Figure 1 is to view;
Fig. 3 is that B shown in Figure 1 is to view;
Fig. 4 is the enlarged drawing (baffle door was in and closed sealing state this moment) after C shown in Figure 2 partly removes first airduct;
Fig. 5 is the enlarged drawing (this moment, baffle door was in opening) after C shown in Figure 2 partly removes first airduct.
Each Reference numeral is following in the accompanying drawing:
1-doorframe 2-testing tube 3-baffle plate 4-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 the mechanism second airduct 12-flexible seals (covering)
13-open slot 14-pressing plate 15-bolt assembly 16-support bar
The specific embodiment
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5; A kind of louver type baffle door with sealing device; Comprise doorframe 1, be installed in the baffle plate 3 on the doorframe 1 through rotating shaft, baffle plate 3 can be set to one or more as required, and this embodiment is that example describes so that two baffle plates 3 to be set.
In the side that YE 8 is installed; Main shaft 9 and outside axle 3 all extends doorframe 1; Through 5 interlocks of first connecting rod mechanism, be provided with position-limit mechanism 7 from axle 6 between the butterfly valve main shaft 9 and the part outside axle 6 extends doorframe 1 and first airduct 4, the end of main shaft 9 is connected with YE 8; Also extend outside the doorframe 1 from the other end of axle 6; Be positioned at homonymy with second airduct 11; Butterfly valves in second airduct 11 and the part of extending this side from axle 6 be through 10 interlocks of second connecting rod mechanism, carries out interlock control between main shaft 9, the butterfly valve in axle 6, first airduct 4 and second airduct 11.
The cross bar that is positioned in the doorframe 1 in the middle of the rectangular frame also can doublely be done installing plate, and cross bar is two that are arranged in parallel, both have the gap make cross bar up and down two-part cavity one be interconnected.
In order to protect covering 12, the cross bar cross section has oval-shaped outline, and oval outline is resisted against covering 12 inboards towards the part of baffle plate and promptly forms the support cambered surface.
Inner edge place in the rectangular frame part; For the ease of fixing of covering 12, on installing plate, also be fixed with support bar 16, support bar 16 is positioned at covering 12; Support bar 16 is fixed on the inboard of installing plate; Covering 12 is fixed on the outside of installing plate, and support bar 16, installing plate, covering 12, pressing plate 14 contact successively, and is fixing through bolt assembly 15.
When baffle plate 3 had only one, promptly omitted at the cross bar position, and the rectangular frame part is only arranged, and then all adopts the support bar of be parallel to each other two installing plates and " P " font to fix covering 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 just in time external surface with covering 12 is relative; When covering 12 is heaved, just in time this opening to be sealed, open slot 13 and the covering of heaving 12 form the cavity two of relative closures.Between the closest approach of the bottom surface of support bar 16 and open slot 13.Except the thickness of covering 12, need leave suitable gap, do not touch when making things convenient for the keying of baffle plate 3.
Cavity one in the whole doorframe 1 is communicated with as a whole; First airduct 4 is communicated with cavity one; Be two separate cavitys by open slot 13 with the cavity two that the covering of heaving 12 constitutes on two baffle doors 3, second airduct 11 through two connecting branches pass successively doorframe 1 and cavity one respectively with two baffle doors 3 on cavity two be communicated with.Second airduct 11 passes part that cavity one contacts with covering 12 for being tightly connected.
The end of main shaft 9 also is provided with rotates the handwheel (not shown), uses when being used for the flue maintenance.
Method for using of the present invention and sealing principle are following:
Control YE 8, interlock control main shaft 9, the butterfly valve in axle 6, first airduct 4 and second airduct 11.
When baffle door of the present invention is closed; Sprain to press in the cavity one that covering 12 and doorframe 1 inner edge surround through first airduct 4 and feed sealing air; Covering 12 is heaved just in time 13 opening parts of the open slot on the baffle plate 3 is sealed; Open slot 13 and the covering of heaving 12 surround the cavity two of relative sealing, in cavity two, feed sealing air through second airduct 11, the pressure in the cavity one greater than the pressure in the cavity two and greater than the blast of the higher side of baffle plate 3 pressure at both sides; The covering of heaving 12 contacts with the opening part of open slot 13 realizes that flexible sealing combines; As shown in Figure 4, isolated flue gas is ganged up through what superfine microgap was seen, and this seal form can guarantee 100% sealing of baffle door for a long time.
Before the baffle door switching motion, through bleeding in 4 pairs of coverings 12 of first airduct, covering 12 shrinks; Reserve the gap with open slot 13, as shown in Figure 5, make things convenient for opening of baffle plate 3; Prevent also that because of friction damages covering 12 after switching motion finished, first airduct 4 and second airduct 11 were closed.
Covering 12 is for having the soft nonmetals of certain thickness, solid, corrosion-resistant, micro-elasticity, and is durable in use, not cracky.
Except covering, other any abilities satisfy and to have certain thickness, all alternative covering of soft nonmetals solid, corrosion-resistant, high pressure resistant, high temperature resistant, micro-elasticity.
The above is merely preferable enforcement of the present invention for example, is not limited to the present invention, and is all within the present invention's spirit and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. louver type baffle door with sealing device; Comprise doorframe (1), be installed at least one rotating shaft on the said doorframe (1) and the baffle plate (3) that drives by this rotating shaft; It is characterized in that; Inner edge around said doorframe (1) is provided with flexible seals (12), surrounds cavity between this flexible seals (12) and described doorframe (1) inner edge, and said doorframe (1) is provided with first airduct (4) that is communicated with this cavity.
2. louver type baffle door according to claim 1; It is characterized in that; Outer rim around said baffle plate (3) is provided with the open slot (13) that cooperates with said flexible seals (12); Described doorframe (1) is provided with second airduct (11) that runs through flexible seals (12), and this second airduct (11) is communicated with said open slot (13), and said second airduct (11) is sealed and matched with the contact portion of flexible seals (12).
3. louver type baffle door according to claim 2 is characterized in that, is provided with the two parallel installing plate along described doorframe (1) inner edge, and the dual-side of said flexible seals (12) is separately fixed on the corresponding installing plate.
4. louver type baffle door according to claim 3 is characterized in that, said installing plate is resisted against the inboard support cambered surface of said flexible seals (12) towards the side of baffle plate (3) along having.
5. according to the described louver type baffle door of the arbitrary claim of claim 2～4; It is characterized in that; Be respectively equipped with valve in said first airduct (4) and second airduct (11), said rotating shaft extend the outer part of doorframe (1) through drive disk assembly respectively with the switch gearing of said valve.
6. louver type baffle door according to claim 5 is characterized in that, said rotating shaft is extended the outer end of doorframe (1) and is connected with YE (8) and rotates handwheel.
7. louver type baffle door according to claim 6 is characterized in that, described baffle plate (3) and rotating shaft are corresponding at least two groups that are provided with, and all rotating shafts link each other.
8. louver type baffle door according to claim 6 is characterized in that, described flexible seals (12) is a 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 true CN102635300A (en) | 2012-08-15 |
| CN102635300B 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) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265123A (en) * | 2014-07-31 | 2015-01-07 | 无锡欧易博阀业科技有限公司 | Sealing door with function capable of being automatically opened and closed |
| CN104736940A (en) * | 2012-08-25 | 2015-06-24 | Cb-Tec有限公司 | Supply-air wall duct |
| CN104948750A (en) * | 2015-06-24 | 2015-09-30 | 丁毅 | Damper sealing structure |
| CN105020413A (en) * | 2015-06-24 | 2015-11-04 | 丁毅 | Sealing baffle door |
| CN105422879A (en) * | 2015-06-24 | 2016-03-23 | 丁毅 | Air bag sealing type partition door |
| CN106641291A (en) * | 2017-01-03 | 2017-05-10 | 南通艾迈特机械有限公司 | Air door baffle 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 (5)
| 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 |
| US20110099906A1 (en) * | 2007-11-23 | 2011-05-05 | Maxxmar Inc | Louvre Blade Seal |
| 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 |
-
2012
- 2012-04-19 CN CN201210116504.0A patent/CN102635300B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| US20110099906A1 (en) * | 2007-11-23 | 2011-05-05 | Maxxmar Inc | Louvre Blade Seal |
| 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 |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104736940A (en) * | 2012-08-25 | 2015-06-24 | Cb-Tec有限公司 | Supply-air wall duct |
| CN104265123A (en) * | 2014-07-31 | 2015-01-07 | 无锡欧易博阀业科技有限公司 | Sealing door with function capable of being automatically opened and closed |
| 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 |
| CN104948750A (en) * | 2015-06-24 | 2015-09-30 | 丁毅 | Damper sealing structure |
| CN105020413A (en) * | 2015-06-24 | 2015-11-04 | 丁毅 | Sealing baffle door |
| CN105422879A (en) * | 2015-06-24 | 2016-03-23 | 丁毅 | Air bag sealing type partition door |
| CN106641291A (en) * | 2017-01-03 | 2017-05-10 | 南通艾迈特机械有限公司 | Air door baffle 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102635300B (en) | 2014-08-06 |
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Granted publication date: 20140806 |
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| CF01 | Termination of patent right due to non-payment of annual fee |