CN204494470U - A kind of pneumatic air door - Google Patents
A kind of pneumatic air door Download PDFInfo
- Publication number
- CN204494470U CN204494470U CN201520126179.5U CN201520126179U CN204494470U CN 204494470 U CN204494470 U CN 204494470U CN 201520126179 U CN201520126179 U CN 201520126179U CN 204494470 U CN204494470 U CN 204494470U
- Authority
- CN
- China
- Prior art keywords
- power transmission
- transmission shaft
- doorframe
- air door
- baffle plate
- 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
A kind of pneumatic air door of the utility model, comprise doorframe, rotate and to be arranged in doorframe and the many power transmission shafts be parallel to each other and the baffle plate be fixedly installed on respectively on power transmission shaft, one end of power transmission shaft is provided with shaft-head sealing device, the end winding support of power transmission shaft is connected with drive link one end, be connected with connecting rod between the other end of drive link, connecting rod is connected with transmission device.A kind of pneumatic air door of the utility model, can realize the folding of adjusted in concert blade, and rotate flexibly, baffle plate can improve the distribution situation of air-flow wake flow well, and shaft seal does not tightly leak pollutant, can be widely used in flue or ducting system.
Description
Technical field
The utility model relates to the throttle setting that a kind of baffle plate carries out opening and closing to control to the opening by fluid circulating.
Background technology
In power plant, smeltery, steel mill etc. need to adjust the combustion conditions of boiler, and the adjustment of operating mode is mainly by regulating comburant coal dust and helping right wind to realize, and the adjustment of air quantity realizes by the air door be arranged on wind pipeline.Air door mainly realizes its regulatory function by throttling.
For the air door of current general type, due to the reason of its structure, baffle plate is difficult to synchronization action accurately, baffle plate folding also underaction, the resistance of air door and the non-linear proportionate relationship of aperture, resistance is large, and Long-Time Service cold-hot condition exists bite, when the defect such as have dust or switch can be caused ineffective under leaking oil condition.
Utility model content
The purpose of this utility model is to provide a kind of pneumatic air door, solves above-mentioned one or multiple of the prior art.
A kind of pneumatic air door of the utility model, comprise doorframe, rotate and to be arranged in doorframe and the many power transmission shafts be parallel to each other and the baffle plate be fixedly installed on respectively on power transmission shaft, one end of power transmission shaft is provided with shaft-head sealing device, the end winding support of power transmission shaft is connected with drive link one end, be connected with connecting rod between the other end of drive link, connecting rod is connected with transmission device.
A kind of pneumatic air door of the utility model, can realize the folding of adjusted in concert blade, and rotate flexibly, baffle plate can improve the distribution situation of air-flow wake flow well, and shaft seal does not tightly leak pollutant, can be widely used in flue or ducting system.
In some embodiments, shaft-head sealing device comprises: spacer, major axis cover, compression lasso, big nut and retaining nut, spacer is welded on inside doorframe, major axis cover is welded on outside doorframe, power transmission shaft is through spacer and major axis cover, long sleeve lining is two sections of shoulder holes, one end inwall is connected with propeller shaft slip, other end inwall and power transmission shaft form ring packing room, ring packing outside is provided with compression lasso, clamping sleeve snare is located at power transmission shaft and is stretched into ring packing room, and compress lasso and fixed by big nut, big nut end is provided with retaining nut.Shaft-head sealing device can prevent the pollutants such as dust from entering power transmission shaft, reduces maintenance times.
In some embodiments, the bottom of doorframe upper end and the bottom of every sheet baffle plate are provided with concave base simultaneously, the top of doorframe lower end and the top of every sheet baffle plate are respectively arranged with the cheese head body that can match with concave base, the face of concave base and cheese head mates is set to sunk structure, and the arc surface of cheese head body can be withheld in the sunk structure of concave base.Concave base and cheese head mates, seal between baffle plate, forms first hermetically-sealed construction.
In some embodiments, major axis overlaps one end external cylindrical surface and is provided with screw thread, and closely cooperates with big nut and compress lasso, and the external cylindrical surface of power transmission shaft is provided with one section of screw thread, and to closely cooperate compression big nut with retaining nut.Use two nuts to fix, structure is more firm.
In some embodiments, be provided with block piece on the downside of concave base, the top of doorframe lower end and the top of baffle plate are also respectively arranged with the protruding part that can match with block piece, and protruding part is positioned at the downside of cheese head body.Block piece matches with block piece, seals between baffle plate, forms second hermetically-sealed construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of pneumatic air door of the utility model;
Fig. 2 is the sectional structure schematic diagram of the shaft-head sealing device of a kind of pneumatic air door of the utility model;
Fig. 3 is the major axis cover sectional view of a kind of pneumatic air door of the utility model;
Fig. 4 is the left view of a kind of pneumatic air door of the utility model;
Fig. 5 is the baffle plate side-looking structural representation of a kind of pneumatic air door of the utility model.
Detailed description of the invention
The utility model provides a kind of pneumatic air door, below in conjunction with the drawings and specific embodiments, describes in detail the utility model:
As Figure 1-3, a kind of pneumatic air door of the utility model, comprise: doorframe 1, to be arranged in doorframe 1 and be parallel to each other three power transmission shafts 2 and the baffle plate 3 that is fixedly installed on respectively on power transmission shaft 2, one end of power transmission shaft 2 is provided with shaft-head sealing device 4, the end of power transmission shaft 2 is also fixedly connected with drive link 22 1 end, be connected with connecting rod 5 between drive link 22 other end, connecting rod 5 is connected with transmission device.
Power transmission shaft 2 can adopt welding or bolt to be fixedly mounted on the centerline of every sheet baffle plate 3, the two ends of power transmission shaft 2 are provided with bearing 21, power transmission shaft 2 is arranged on the both sides of doorframe 1 by bearing 21, the power transmission shaft 2 that doorframe 1 both sides are exposed is provided with shaft-head sealing device 4, shaft-head sealing device can prevent the pollutants such as dust from entering power transmission shaft, reduces maintenance times.
Shaft-head sealing device 4 comprises, spacer 41, major axis cover 42, compress lasso 43, big nut 44 and retaining nut 45, spacer 41 is welded on inside doorframe 1, major axis cover 42 is welded on outside doorframe 1, power transmission shaft 2 is through spacer 41 and major axis cover 42, major axis cover 42 has the first through hole 421, the basis of major axis cover 42 first through holes 421 has the second through hole 422, second through hole 422 radius is greater than the radius of the first through hole 421, thus overlap 42 inwalls at major axis and form two sections of shoulder holes, power transmission shaft 2 is arranged in the first through hole 421, such power transmission shaft 2 can rotate in the first through hole 421 that major axis overlaps 42, second through hole 422 forms ring packing room 420 with power transmission shaft 2, compress lasso 43 to be sheathed on power transmission shaft 2 and to stretch into ring packing room 420, one end external cylindrical surface of major axis cover 42 is provided with screw thread, and closely cooperate with big nut 44, compression lasso 43 is fixed by big nut 44, the external cylindrical surface of power transmission shaft 2 is provided with one section of screw thread, and closely cooperate with retaining nut 45, retaining nut 45 compresses big nut 44.
As shown in Figure 4, the outside of doorframe 1, the end of power transmission shaft 2 is also fixedly connected with drive link 22, drive link 22 is welded on the end of power transmission shaft 2, and drive link 22 is articulated with on connecting rod 5, and one end of connecting rod 5 is fixedly connected with transmission device 5, transmission device 5 is fixedly mounted on doorframe 1, transmission device in the utility model is cylinder, and the piston rod welding of cylinder and one end of connecting rod 5, cylinder is fixedly mounted on doorframe 1.
As shown in Figure 5, the bottom of doorframe 1 upper end and the bottom of every sheet baffle plate 2 are provided with concave base 31 simultaneously, the top of doorframe 1 lower end and the top of every sheet baffle plate are respectively arranged with the cheese head body 32 that can match with concave base 31, the face that concave base 31 matches with cheese head body 32 is set to sunk structure, the arc surface of cheese head body 32 can be withheld in the sunk structure of concave base 31, like this, when baffle plate 2 closes, a seal structures will be formed.Concave base 31 lower vertical is provided with block piece 33, the top of doorframe 1 lower end and the top of every sheet baffle plate 3 are also respectively arranged with the protruding part 34 that can match with block piece 33, protruding part 34 is positioned at the downside of cheese head body, and block piece 33 matches with protruding part 34, forms second hermetically-sealed construction.
A kind of pneumatic air door of the utility model, can realize the folding of adjusted in concert blade, and rotates flexibly, baffle plate can improve the distribution situation of air-flow wake flow well, shaft seal does not tightly leak pollutant, and the tight insulating of flapper closure is good, can be widely used in flue or ducting system.
Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (5)
1. a pneumatic air door, it is characterized in that, comprise doorframe (1), rotate and to be arranged in described doorframe (1) and the many power transmission shafts (2) be parallel to each other and the baffle plate (3) be fixedly installed on respectively on described power transmission shaft (2), one end of described power transmission shaft (2) is provided with shaft-head sealing device (4), the end of described power transmission shaft (2) is also fixedly connected with drive link (22) end, be connected with connecting rod (5) between described drive link (22) other end, described connecting rod (5) is connected with transmission device.
2. a kind of pneumatic air door according to claim 1, it is characterized in that, described shaft-head sealing device (4) comprising: spacer (41), major axis cover (42), compress lasso (43), big nut (44) and retaining nut (45), described spacer (41) is welded on described doorframe (1) inner side, described major axis cover (42) is welded on described doorframe (1) outside, described power transmission shaft (2) is through described spacer (41) and major axis cover (42), described major axis cover (42) inwall is two sections of shoulder holes, one end inwall and described power transmission shaft (2) are slidably connected, other end inwall and described power transmission shaft (2) form ring packing room (420), described ring packing room (420) outside is provided with and compresses lasso (43), described compression lasso (43) is sheathed on described power transmission shaft (2) and stretches into described ring packing room (420), described compression lasso (43) is fixed by big nut (44), described big nut (44) end is provided with retaining nut (45).
3. a kind of pneumatic air door according to claim 1, it is characterized in that, the bottom of described doorframe (1) upper end and the bottom of every sheet baffle plate (3) are provided with concave base (31) simultaneously, the top of described doorframe (1) lower end and the top of every sheet baffle plate (3) are respectively arranged with the cheese head body (32) that can match with described concave base (31), the face that described concave base (31) matches with cheese head body (32) is set to sunk structure, the arc surface of described cheese head body (32) can be withheld in the sunk structure of described concave base (31).
4. a kind of pneumatic air door according to claim 2, it is characterized in that, described major axis cover (42) one end external cylindrical surface is provided with screw thread, and closely cooperate with described big nut (44) and compress lasso (43), the external cylindrical surface of described power transmission shaft (2) is provided with one section of screw thread, and closely cooperates with described retaining nut (45) and compress big nut (44).
5. a kind of pneumatic air door according to claim 3, it is characterized in that, described concave base (31) downside is provided with block piece (33), top and the top of baffle plate (3) of described doorframe (1) lower end are also respectively arranged with the protruding part (34) that can match with described block piece (33), and described protruding part (34) is positioned at the downside of described cheese head body (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520126179.5U CN204494470U (en) | 2015-03-04 | 2015-03-04 | A kind of pneumatic air door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520126179.5U CN204494470U (en) | 2015-03-04 | 2015-03-04 | A kind of pneumatic air door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204494470U true CN204494470U (en) | 2015-07-22 |
Family
ID=53573783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520126179.5U Expired - Fee Related CN204494470U (en) | 2015-03-04 | 2015-03-04 | A kind of pneumatic air door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204494470U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042619A (en) * | 2015-08-25 | 2015-11-11 | 常州联合锅炉容器有限公司 | Differential pressure adjusting air damper |
| CN105202557A (en) * | 2015-10-14 | 2015-12-30 | 无锡市华通电力设备有限公司 | Connecting rod device for boiler flue temperature adjusting baffle |
-
2015
- 2015-03-04 CN CN201520126179.5U patent/CN204494470U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105042619A (en) * | 2015-08-25 | 2015-11-11 | 常州联合锅炉容器有限公司 | Differential pressure adjusting air damper |
| CN105042619B (en) * | 2015-08-25 | 2017-06-27 | 常州联合锅炉容器有限公司 | Pressure difference damper |
| CN105202557A (en) * | 2015-10-14 | 2015-12-30 | 无锡市华通电力设备有限公司 | Connecting rod device for boiler flue temperature adjusting baffle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150722 Termination date: 20160304 |