CN215763296U - Nitrogen sealing structure of rotating shaft of carbon black tail gas conveying fan - Google Patents
Nitrogen sealing structure of rotating shaft of carbon black tail gas conveying fan Download PDFInfo
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- CN215763296U CN215763296U CN202122211696.0U CN202122211696U CN215763296U CN 215763296 U CN215763296 U CN 215763296U CN 202122211696 U CN202122211696 U CN 202122211696U CN 215763296 U CN215763296 U CN 215763296U
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- tail gas
- nitrogen
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Abstract
The utility model belongs to the field of sealing structures, and discloses a nitrogen sealing structure of a rotating shaft of a carbon black tail gas conveying fan, which comprises a machine shell and the rotating shaft, wherein the outer side of the machine shell is fixedly connected with a sealing seat through a bolt, the outer side of the rotating shaft is sequentially sleeved with an inner seal, a soft seal and an outer seal which are positioned in the sealing seat from bottom to top, the top of the sealing seat is provided with a top cover, the top cover is fixedly connected with the top of the sealing seat through the bolt, the bottom of the top cover is contacted with the top of the outer seal and tightly presses the outer seal, the top and the bottom of the soft seal are respectively in close contact with the outer seal and the inner seal, the sealing seat is provided with a nitrogen interface, the space between the soft seal and the rotating shaft is communicated with the nitrogen interface, a small amount of nitrogen is introduced through the nitrogen interface, the pressure of the rotating shaft and the soft seal can be maintained slightly higher than that of a shaft bin of the fan, and the effect of sealing carbon black tail gas is achieved, the hidden danger of combustible gas explosion on the site of the carbon black tail gas conveying fan is eliminated.
Description
Technical Field
The utility model relates to the field of sealing structures, in particular to a nitrogen sealing structure of a rotating shaft of a carbon black tail gas conveying fan.
Background
The carbon black tail gas is a byproduct in the production process of carbon black, the carbon black tail gas contains about 30% of combustible gas, 53% of nitrogen and the like, and the carbon black tail gas is treated by circulating and feeding the carbon black tail gas into a tail gas boiler system for combustion.
However, because pressure is great in the pipeline among the transportation process, this fan department that just leads to carrying tail gas especially at fan pivot and fan shell junction, easily has carbon black tail gas to reveal, causes the environmental pollution and the economic loss of enterprise easily, for this reason, provides a carbon black tail gas and carries the nitrogen gas seal structure of fan pivot to solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
Aiming at the problems in the prior art, the utility model aims to provide a nitrogen sealing structure of a rotating shaft of a carbon black tail gas conveying fan, a small amount of nitrogen is introduced, the pressure between a shell and a soft seal is maintained to be slightly higher than that of a fan shaft bin, the effect of sealing carbon black tail gas is achieved, the purpose of avoiding the carbon black tail gas from leaking out of the shaft bin is achieved, the leakage of the carbon black tail gas is avoided, energy is saved, the waste of energy is avoided, and meanwhile, the hidden danger of combustible gas explosion on the site of the carbon black tail gas conveying fan is eliminated.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides a nitrogen gas seal structure of carbon black tail gas conveying fan pivot, includes casing and pivot, bolt fixedly connected with seal receptacle is passed through in the outside of casing, the outside of pivot is by supreme cover in proper order being equipped with and being located inside inner seal, soft seal and the external seal of seal receptacle, the top of seal receptacle is provided with the top cap, the top cap passes through the top fixed connection of bolt and seal receptacle, the bottom of top cap and the top contact of external seal and will the external seal compresses tightly, soft sealed top and bottom respectively with external seal and inner seal in close contact with, the nitrogen gas interface has been seted up in the left side of seal receptacle, space between soft seal and the pivot with the nitrogen gas interface is linked together, inner seal, soft seal, external seal, top cap and the coaxial setting of pivot.
As a further scheme of the utility model: the inner side and the outer side of the soft seal are both provided with grooves, and through holes are connected between the grooves on the inner side and the outer side.
As a further scheme of the utility model: the number of through-holes is eight and be the circumference and distribute, the diameter of through-hole is 4 mm.
As a further scheme of the utility model: the bottom of the sealing seat is embedded with a sealing ring, and the bottom of the sealing ring is in close contact with the surface of the machine shell.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages that:
(1) this scheme lets in a small amount of nitrogen gas through the nitrogen gas interface when the fan moves, and nitrogen gas gets into between seal receptacle and the pivot, maintains pivot and the soft sealed pressure and is a little higher than fan shaft storehouse, reaches the effect of sealed carbon black tail gas to avoid carbon black tail gas to reveal to the shaft storehouse, the energy can be saved avoids the waste of the energy, has eliminated the on-the-spot combustible gas explosion hidden danger of carbon black tail gas conveying fan simultaneously.
(2) The nitrogen gas that this scheme let in has reduced the temperature in fan pivot shaft storehouse, has improved fan operational environment, and carbon black tail gas temperature is higher, but does not reveal under nitrogen gas is sealed, has effectively alleviated the high problem of shaft storehouse temperature.
(3) This scheme inlays the sealing washer of establishing and casing in close contact with through seal receptacle bottom, can seal the gap between seal receptacle and the casing, improves sealed effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the soft seal structure of the present invention.
The reference numbers in the figures illustrate:
1. a housing; 2. a rotating shaft; 3. a sealing seat; 4. internal sealing; 5. soft sealing; 6. sealing outside; 7. a top cover; 8. a nitrogen interface; 9. a through hole; 10. and (5) sealing rings.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Please refer to fig. 1-2, a nitrogen sealing structure of a carbon black tail gas conveying fan rotating shaft, which comprises a casing 1 and a rotating shaft 2, the outer side of the casing 1 is fixedly connected with a sealing seat 3 through a bolt, the outer side of the rotating shaft 2 is sequentially sleeved with an inner seal 4 positioned inside the sealing seat 3 from bottom to top, a soft seal 5 and an outer seal 6, a top cover 7 is arranged at the top of the sealing seat 3, the top cover 7 is fixedly connected with the top of the sealing seat 3 through a bolt, the bottom of the top cover 7 is contacted with the top of the outer seal 6 and tightly presses the outer seal 6, the top and the bottom of the soft seal 5 are respectively in close contact with the outer seal 6 and the inner seal 4, a nitrogen interface 8 is arranged at the left side of the sealing seat 3, the space between the soft seal 5 and the rotating shaft 2 is communicated with the nitrogen interface 8, the inner seal 4, the soft seal 5, the outer seal 6, the top cover 7 and the rotating shaft 2 are coaxially arranged.
Furthermore, grooves are formed in the inner side and the outer side of the soft seal 5, and through holes 9 are connected between the grooves in the inner side and the outer side.
Furthermore, the number of the through holes 9 is eight and the through holes are distributed circumferentially, and the diameters of the through holes 9 are all 4 mm.
Further, the bottom of seal receptacle 3 inlays and is equipped with sealing washer 10, the bottom of sealing washer 10 and the surperficial in close contact with of casing 1, through the sealing washer 10 of establishing with casing 1 in close contact with that inlays in the bottom of seal receptacle 3, can seal the gap between seal receptacle 3 and the casing 1, improve sealed effect.
The working principle is as follows: the sealing seat 3 is arranged on the surface of the casing 1 through bolts, the inner seal 4, the soft seal 5 and the outer seal 6 are sequentially sleeved on the outer side of the rotating shaft 2, the inner seal 4, the soft seal 5 and the outer seal 6 are all arranged on the inner side of the sealing seat 3, when the top cover 7 is arranged on the top of the sealing seat 3 through bolts, the top cover 7 can tightly press the outer seal 6, when the fan operates, a small amount of nitrogen is introduced through the nitrogen interface 8, the nitrogen enters between the sealing seat 3 and the rotating shaft 2, the pressure of the rotating shaft 2 and the soft seal 5 is maintained to be slightly higher than that of a fan shaft bin, the effect of sealing carbon black tail gas is achieved, so that the carbon black tail gas is prevented from being exposed outside the shaft bin, energy is saved, the waste of energy is avoided, meanwhile, the hidden danger of combustible gas explosion on the site of the carbon black tail gas conveying fan is eliminated, meanwhile, the temperature of the shaft bin of the rotating shaft bin of the fan is reduced through the introduced nitrogen, the operating environment of the fan is improved, and the temperature of the carbon black tail gas is higher, but do not reveal under nitrogen gas is sealed, has effectively alleviated the high problem of shaft storehouse temperature.
The foregoing is only a preferred embodiment of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (4)
1. The utility model provides a nitrogen gas seal structure of carbon black tail gas conveying fan pivot, includes casing (1) and pivot (2), its characterized in that: bolt fixedly connected with seal receptacle (3) is passed through in the outside of casing (1), the outside of pivot (2) is equipped with interior seal (4), soft seal (5) and external seal (6) that are located seal receptacle (3) inside by supreme cover down in proper order, the top of seal receptacle (3) is provided with top cap (7), top cap (7) are through the top fixed connection of bolt and seal receptacle (3), the bottom of top cap (7) and the top contact of external seal (6) will external seal (6) compress tightly, the top and the bottom of soft seal (5) respectively with external seal (6) and interior seal (4) in close contact with, nitrogen gas interface (8) have been seted up in the left side of seal receptacle (3), space between soft seal (5) and pivot (2) with nitrogen gas interface (8) are linked together, interior seal (4), The soft seal (5), the outer seal (6), the top cover (7) and the rotating shaft (2) are coaxially arranged.
2. The nitrogen sealing structure of the rotating shaft of the carbon black tail gas conveying fan according to claim 1, characterized in that: grooves are formed in the inner side and the outer side of the soft seal (5), and through holes (9) are connected between the grooves in the inner side and the outer side.
3. The nitrogen sealing structure of the rotating shaft of the carbon black tail gas conveying fan according to claim 2, characterized in that: the number of the through holes (9) is eight and the through holes are circumferentially distributed, and the diameters of the through holes (9) are all 4 mm.
4. The nitrogen sealing structure of the rotating shaft of the carbon black tail gas conveying fan according to claim 1, characterized in that: the bottom of the sealing seat (3) is embedded with a sealing ring (10), and the bottom of the sealing ring (10) is in close contact with the surface of the machine shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122211696.0U CN215763296U (en) | 2021-09-13 | 2021-09-13 | Nitrogen sealing structure of rotating shaft of carbon black tail gas conveying fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122211696.0U CN215763296U (en) | 2021-09-13 | 2021-09-13 | Nitrogen sealing structure of rotating shaft of carbon black tail gas conveying fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215763296U true CN215763296U (en) | 2022-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122211696.0U Active CN215763296U (en) | 2021-09-13 | 2021-09-13 | Nitrogen sealing structure of rotating shaft of carbon black tail gas conveying fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215763296U (en) |
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2021
- 2021-09-13 CN CN202122211696.0U patent/CN215763296U/en active Active
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