CN103277574A - Door shaft air seal of air door baffle door - Google Patents
Door shaft air seal of air door baffle door Download PDFInfo
- Publication number
- CN103277574A CN103277574A CN2013102293572A CN201310229357A CN103277574A CN 103277574 A CN103277574 A CN 103277574A CN 2013102293572 A CN2013102293572 A CN 2013102293572A CN 201310229357 A CN201310229357 A CN 201310229357A CN 103277574 A CN103277574 A CN 103277574A
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- packing
- door
- packing group
- seal part
- stuffing box
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Abstract
The invention relates to the sealing field, in particular to a door shaft air seal of an air door baffle door. The door shaft air seal comprises a packing box of an annular column structure. A door shaft penetrates a center through hole of the packing box, and the bottom of the packing box is connected with a channel. A first packing group, an air pressure sealing piece and a second packing group are sequentially filled in the packing box from the bottom. A press cover is arranged on an opening of the packing box and is in close contact with the second packing group. The outer surfaces of the first packing group and the second packing group are in close contact with the inner surface of the packing box respectively, and the inner surfaces of the first packing group and the second packing group are in close contact with the lateral surface of the door shaft. An air cavity is arranged between the air pressure sealing piece and the lateral surface of the door shaft, a compressed air inlet is arranged on the lateral wall of the packing box, and the compressed air inlet is communicated with the air cavity. The door shaft air seal of the air door baffle door effectively prevents fly ash in an air channel from overflowing outwards along the gaps between the packing groups and the door shaft.
Description
Technical field
The present invention relates to field of sealing technology, in particular to the hermetic seal of air door baffle plate every axle.
Background technique
Baffle door also claims shutoff door, air channel barrier door or smoke damper door, being usually used in doing in the smoke pipe, air channel in power plant or other industry medium that dams uses, seal aspect correlation technique at the baffle door door-hinge is the sealing of packing filling formula, by adding the multilayer filler, compress the multilayer filler then, filler is expanded on the direction perpendicular to pressure, because the multilayer filler contacts with door-hinge on perpendicular to the direction of door-hinge, therefore no longer there is the space between the filler after the expansion and the door-hinge, and then reaches the effect of sealing.This mode, have bigger shortcoming: door-hinge often contacts with the filler packing and rubs, packing very easily weares and teares, especially the door-hinge filler packing in the zone that some high temperature and flying dust amount are high can be subjected to the influence of high temperature, the damage that the meeting appearance is bigger (such as: packing becomes dry even breaks), the filler packing of damage can't closely contact with door-hinge, thereby causes poorly sealed close.
Summary of the invention
The object of the present invention is to provide the hermetic seal of air door baffle plate every axle, to solve the above problems.
The hermetic seal of a kind of air door baffle plate every axle is provided in an embodiment of the present invention, the stuffing box that comprises the ring-type column structure, door-hinge passes from the central through bore of described stuffing box, the bottom of described stuffing box is connected with passage, the inside of described stuffing box is filled with the first packing group successively from the bottom, pressurized seal part and the second packing group, the opening of described stuffing box is provided with gland, described gland closely contacts with the described second packing group, the outer surface of the described first packing group and the described second packing group closely contacts with the inner surface of described stuffing box respectively, and the inner surface of the described first packing group and the described second packing group closely contacts with the side surface of described door-hinge respectively;
Be provided with gas cavity between the side surface of described pressurized seal part and described door-hinge, the sidewall of described stuffing box is provided with compressed air inlet, and described compressed air inlet is communicated with described gas cavity.
Preferably, described pressurized seal part is column structure in the form of a ring, and the central shaft of described pressurized seal part and the central shaft of described stuffing box coincide;
Described pressurized seal part is the thick middle fine texture in two ends, the outside diameter of the cross section at described pressurized seal part two ends equates that with the interior circular diameter of the cross section of stuffing box the interior circular diameter of the cross section at described pressurized seal part two ends is greater than the diameter of the cross section of described door-hinge.
Preferably, described pressurized seal part is centrosymmetric.
Preferably, space between the outer surface of described pressurized seal part and the inner surface of described stuffing box constitutes first space, space between the inner surface of described pressurized seal part and the side surface of described door-hinge constitutes second space, and described gas cavity comprises: described first space and described second space.
Preferably, the sidewall of described pressurized seal part is provided with a plurality of through holes, and described through hole is used for being communicated with described first space and described second space.
Preferably, the described first packing group comprises first packing of a plurality of mutual superposition, and the coaxial setting of all described first packings, annulus width equate.
Preferably, the described second packing group comprises second packing of a plurality of mutual superposition, and the coaxial setting of all described second packings, annulus width equate.
Preferably, the area of the surface of contact of the described first packing group and described pressurized seal part is equal to or less than the annulus area of first packing.
Preferably, the area of the surface of contact of the described second packing group and described pressurized seal part is equal to or less than the annulus area of second packing.
Preferably, the material of described pressurized seal part is metal material or hard plastic material or rubber material.
Air door baffle plate every axle hermetic seal that the above embodiment of the present invention provides can reach following beneficial effect:
The inside of stuffing box is filled with the first packing group, pressurized seal part and the second packing group successively from the bottom, gland closely contacts with the described second packing group, the outer surface of the first packing group and the second packing group closely contacts with the inner surface of described stuffing box respectively, and the inner surface of the described first packing group and the described second packing group closely contacts with the side surface of described door-hinge respectively; Be provided with gas cavity between the side surface of pressurized seal part and door-hinge, this gas cavity links to each other with compressed air inlet, so just formed the pressurized seal chamber that is constituted by pressurized air between the first packing group and the second packing group, after door-hinge repeatedly rotates, dust can cause damage to the first packing group in touching with the first packing winding, damage back is because compressed-air actuated pressure blast in the air channel, pressurized air can be blown into the air channel in the gap of door-hinge along the first packing group, has effectively stoped the flying dust in the air channel outwards to overflow along the gap of packing group and door-hinge.
Description of drawings
Fig. 1 shows the schematic representation of the longitudinal section of damper plate every axle hermetic seal among the embodiment 2;
Fig. 2 shows the schematic representation of the cross section of pressurized seal part among the embodiment 2;
Fig. 3 shows the schematic representation of the plan view of pressurized seal part among the embodiment 2.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Embodiment one:
The hermetic seal of a kind of air door baffle plate every axle, the stuffing box that comprises the ring-type column structure, door-hinge passes from the central through bore of described stuffing box, the bottom of described stuffing box is connected with passage, it is characterized in that, the inside of described stuffing box is filled with the first packing group successively from the bottom, pressurized seal part and the second packing group, the opening of stuffing box is provided with gland, described gland closely contacts with the described second packing group, the outer surface of the described first packing group and the described second packing group closely contacts with the inner surface of described stuffing box respectively, and the inner surface of the described first packing group and the described second packing group closely contacts with the side surface of described door-hinge respectively;
Be provided with gas cavity between the side surface of described pressurized seal part and described door-hinge, the sidewall of described stuffing box is provided with compressed air inlet, and described compressed air inlet is communicated with described gas cavity.
The inside of stuffing box is filled with the first packing group, pressurized seal part and the second packing group successively from the bottom, gland closely contacts with the described second packing group, the outer surface of the first packing group and the described second packing group closely contacts with the inner surface of described stuffing box respectively, and the inner surface of the described first packing group and the described second packing group closely contacts with the side surface of described door-hinge respectively; Be provided with gas cavity between the side surface of pressurized seal part and door-hinge, this gas cavity links to each other with compressed air inlet, so just formed the pressurized seal chamber that is constituted by pressurized air between the first packing group and the second packing group, after door-hinge repeatedly rotates, dust can cause damage to the first packing group in touching with the first packing winding, damage back is because compressed-air actuated pressure blast in the air channel, pressurized air can be blown into the air channel in the gap of door-hinge along the first packing group, has effectively stoped the flying dust in the air channel outwards to overflow along the gap of packing group and door-hinge.
Embodiment 2:
The hermetic seal of a kind of air door baffle plate every axle, as Figure 1-3, the stuffing box that comprises the ring-type column structure, the central through bore of door-hinge 10 self filler boxes passes, the bottom of stuffing box is connected with passage, this passage can be decided according to the installation site of door-hinge 10, such as: air channel, high temperature channel, dust channel etc.The annexation of stuffing box and passage can adopt the relation of being fixedly coupled, and this fixedly connected relation preferably adopts the Placement of welding.
In the stuffing box, the bottom 1 of self filler box is on the opening direction of stuffing box, be filled with the first packing group 3, pressurized seal part 5 and the second packing group 4 successively, the opening of stuffing box is provided with gland 11, this gland 11 closely contacts with the second packing group 4, and the second packing group 4 compressed, the outer surface of the first packing group and the described second packing group closely contacts with the inner surface of described stuffing box respectively, and the inner surface of the described first packing group and the described second packing group closely contacts with the side surface of described door-hinge respectively; Be provided with gas cavity between the side surface of pressurized seal part 5 and door-hinge 10, the sidewall 2 of stuffing box is provided with compressed air inlet 6, and this compressed air inlet 6 is communicated with gas cavity.Pressurized air constantly blasts, and pressurized air is filled gas cavity.
The first packing group 3 is first packing of a plurality of packing mutual superposition, and the annulus width of the coaxial setting of all first packings, packing equates; The second packing group 4 is second packing of a plurality of packing mutual superposition, and the annulus width of the coaxial setting of all second packings, packing equates.For the outer surface that makes the first packing group 3 and the described second packing group 4 closely contacts with the inner surface of described stuffing box respectively, the inner surface of the described first packing group 3 and the described second packing group 4 closely contacts with the side surface of door-hinge 10 respectively; First packing and the second packing shape, size are all identical, and the inner surface of all first packings, all second packings all closely contacts with the side surface of door-hinge 10.
It is to be noted in addition, because the first packing group, the 3 relative second packing group, 4 distances are filled box bottom nearly (also can be called near apart from the cigarette air channel simultaneously), therefore, the dust that the first packing group 3 touches is many, the second packing group 4 does not contact dust basically, the damage that the first packing group 3 is vulnerable to.
In addition, for make pressurized seal part 5 not with door-hinge 10 phase mutual friction, described pressurized seal part is the thick middle fine texture in two ends, the outside diameter of the cross section at described pressurized seal part two ends equates that with the interior circular diameter of the cross section of stuffing box the interior circular diameter of the cross section at described pressurized seal part two ends is greater than the diameter of door-hinge cross section.The inner side surface at the middle part of pressurized seal part 5 does not contact with the side surface of door-hinge 10, there is second space between the two, this second space is the space between the side surface of the inner surface 9 of pressurized seal part and door-hinge 10, and this second space has namely constituted the part in gas seal chamber.In order to form second space, the inner surface 9 of pressurized seal part is curved-surface structure, to the sidewall 2 direction bendings of filling box, to the side face directions opening of door-hinge 10.For the pressurized gas that will deposit in first space is full of in second space, sidewall at pressurized seal part 5 offers a plurality of through holes 7, the distribution mode of this through hole 7 does not limit, can evenly distribute, also can uneven distribution, these through holes 7 have been communicated with first space and second space, by this through hole 7, exist the pressurized air in first space can enter second space.First space, all through holes 7, second space have constituted the above-mentioned gas Seal cage.
From the above, pressurized air forms a hermetic seal cavity that is made of pressurized air between the first packing group 3 and the second packing group 4, the first packing group 3 is after sustaining damage, because compressed-air actuated pressure is greater than the pressure of gas, dust in the passage, therefore, pressurized air can be blown into the air channel along the gap of the first packing group 3 and door-hinge 10, has effectively stoped the flying dust in the air channel outwards to overflow along the gap of packing group and door-hinge.
Consider said structure, therefore, the material of pressurized seal part 5 can all can for metal material hard plastic material or rubber material.
The inside of stuffing box is filled with the first packing group, pressurized seal part and the second packing group successively from the bottom, gland closely contacts with the described second packing group, the outer surface of the first packing group and the described second packing group closely contacts with the inner surface of described stuffing box respectively, and the inner surface of the described first packing group and the described second packing group closely contacts with the side surface of described door-hinge respectively; Be provided with gas cavity between the side surface of pressurized seal part and door-hinge, this gas cavity links to each other with compressed air inlet, so just formed the pressurized seal chamber that is constituted by pressurized air between the first packing group and the second packing group, after door-hinge repeatedly rotates, dust can cause damage to the first packing group in touching with the first packing winding, damage back is because compressed-air actuated pressure blast in the air channel, pressurized air can be blown into the air channel in the gap of door-hinge along the first packing group, has effectively stoped the flying dust in the air channel outwards to overflow along the gap of packing group and door-hinge.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. air door baffle plate every axle hermetic seal, the stuffing box that comprises the ring-type column structure, door-hinge passes from the central through bore of described stuffing box, the bottom of described stuffing box is connected with passage, it is characterized in that, the inside of described stuffing box is filled with the first packing group successively from the bottom, pressurized seal part and the second packing group, the opening of described stuffing box is provided with gland, described gland closely contacts with the described second packing group, the outer surface of the described first packing group and the described second packing group closely contacts with the inner surface of described stuffing box respectively, and the inner surface of the described first packing group and the described second packing group closely contacts with the side surface of described door-hinge respectively;
Be provided with gas cavity between the side surface of described pressurized seal part and described door-hinge, the sidewall of described stuffing box is provided with compressed air inlet, and described compressed air inlet is communicated with described gas cavity.
2. air door baffle plate every axle according to claim 1 hermetic seal is characterized in that,
Described pressurized seal part is column structure in the form of a ring, and the central shaft of described pressurized seal part and the central shaft of described stuffing box coincide;
Described pressurized seal part is the thick middle fine texture in two ends, the outside diameter of the cross section at described pressurized seal part two ends equates that with the interior circular diameter of the cross section of stuffing box the interior circular diameter of the cross section at described pressurized seal part two ends is greater than the diameter of the cross section of described door-hinge.
3. air door baffle plate every axle according to claim 2 hermetic seal is characterized in that,
Described pressurized seal part is centrosymmetric.
4. air door baffle plate every axle according to claim 2 hermetic seal is characterized in that,
Space between the outer surface of described pressurized seal part and the inner surface of described stuffing box constitutes first space, space between the inner surface of described pressurized seal part and the side surface of described door-hinge constitutes second space, and described gas cavity comprises: described first space and described second space.
5. air door baffle plate every axle according to claim 4 hermetic seal is characterized in that,
The sidewall of described pressurized seal part is provided with a plurality of through holes, and described through hole is used for being communicated with described first space and described second space.
6. according to each described air door baffle plate every axle hermetic seal of claim 1-5, it is characterized in that,
The described first packing group comprises first packing of a plurality of mutual superposition, and the coaxial setting of all described first packings, annulus width equate.
7. air door baffle plate every axle according to claim 6 hermetic seal is characterized in that,
The described second packing group comprises second packing of a plurality of mutual superposition, and the coaxial setting of all described second packings, annulus width equate.
8. air door baffle plate every axle according to claim 7 hermetic seal is characterized in that,
The area of the surface of contact of the described first packing group and described pressurized seal part is equal to or less than the annulus area of first packing.
9. air door baffle plate every axle according to claim 7 hermetic seal is characterized in that,
The area of the surface of contact of the described second packing group and described pressurized seal part is equal to or less than the annulus area of second packing.
10. according to each described air door baffle plate every axle hermetic seal of claim 1-5, it is characterized in that,
The material of described pressurized seal part is metal material or hard plastic material or rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102293572A CN103277574A (en) | 2013-06-07 | 2013-06-07 | Door shaft air seal of air door baffle door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102293572A CN103277574A (en) | 2013-06-07 | 2013-06-07 | Door shaft air seal of air door baffle door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103277574A true CN103277574A (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102293572A Pending CN103277574A (en) | 2013-06-07 | 2013-06-07 | Door shaft air seal of air door baffle door |
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| Country | Link |
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| CN (1) | CN103277574A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10213233A (en) * | 1997-01-28 | 1998-08-11 | Unitika Ltd | Seal method for bearing part of polycondensation reaction device |
| JP2000213652A (en) * | 1999-01-25 | 2000-08-02 | Ishikawajima Harima Heavy Ind Co Ltd | Shaft seal structure |
| CN2716600Y (en) * | 2004-06-23 | 2005-08-10 | 江苏南大紫金智能科技有限公司 | Shaft end sealing structure for powder processing equipment |
| CN2797705Y (en) * | 2005-05-30 | 2006-07-19 | 宝山钢铁股份有限公司 | Shift sleeving type packing shaft sealing device |
| CN201475380U (en) * | 2009-08-04 | 2010-05-19 | 铜陵长江铜业有限公司 | Novel sealing gate valve |
| CN202182186U (en) * | 2011-07-14 | 2012-04-04 | 内蒙古大唐国际托克托发电有限责任公司 | Damper shaft sealing device for hot-blast damper |
| US20120211945A1 (en) * | 2011-02-17 | 2012-08-23 | Hoerbiger Kompressortechnik Holding Gmbh | Sealing packing for a reciprocating piston rod of a reciprocating compressor |
| CN202629319U (en) * | 2012-07-09 | 2012-12-26 | 大唐黑龙江发电有限公司哈尔滨第一热电厂 | Sealing door spindle of air-duct door of coal mill |
| CN203297744U (en) * | 2013-06-07 | 2013-11-20 | 王一 | Door shaft hermetic seal of air door baffle door |
-
2013
- 2013-06-07 CN CN2013102293572A patent/CN103277574A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10213233A (en) * | 1997-01-28 | 1998-08-11 | Unitika Ltd | Seal method for bearing part of polycondensation reaction device |
| JP2000213652A (en) * | 1999-01-25 | 2000-08-02 | Ishikawajima Harima Heavy Ind Co Ltd | Shaft seal structure |
| CN2716600Y (en) * | 2004-06-23 | 2005-08-10 | 江苏南大紫金智能科技有限公司 | Shaft end sealing structure for powder processing equipment |
| CN2797705Y (en) * | 2005-05-30 | 2006-07-19 | 宝山钢铁股份有限公司 | Shift sleeving type packing shaft sealing device |
| CN201475380U (en) * | 2009-08-04 | 2010-05-19 | 铜陵长江铜业有限公司 | Novel sealing gate valve |
| US20120211945A1 (en) * | 2011-02-17 | 2012-08-23 | Hoerbiger Kompressortechnik Holding Gmbh | Sealing packing for a reciprocating piston rod of a reciprocating compressor |
| CN202182186U (en) * | 2011-07-14 | 2012-04-04 | 内蒙古大唐国际托克托发电有限责任公司 | Damper shaft sealing device for hot-blast damper |
| CN202629319U (en) * | 2012-07-09 | 2012-12-26 | 大唐黑龙江发电有限公司哈尔滨第一热电厂 | Sealing door spindle of air-duct door of coal mill |
| CN203297744U (en) * | 2013-06-07 | 2013-11-20 | 王一 | Door shaft hermetic seal of air door baffle door |
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Application publication date: 20130904 |