CN215567942U - Stirrer sealing device for wet limestone desulfurization tower - Google Patents
Stirrer sealing device for wet limestone desulfurization tower Download PDFInfo
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- CN215567942U CN215567942U CN202120619539.0U CN202120619539U CN215567942U CN 215567942 U CN215567942 U CN 215567942U CN 202120619539 U CN202120619539 U CN 202120619539U CN 215567942 U CN215567942 U CN 215567942U
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Abstract
The utility model relates to a stirrer sealing device for a wet limestone desulfurization tower, wherein a stirrer of the stirrer comprises a sealing device; the sealing device comprises an outer shell, an inner shell, a bearing box and a sealing assembly; one end of the outer shell is fixedly connected with the tower wall through a fastener, and the other end of the outer shell is connected with the speed reducer through a fastener; the inner shell is fixedly connected with the tower wall through a fastener; the bearing box is arranged in the tower wall open hole and is fixedly connected with the tower wall through a fastener, and a cavity is formed among the bearing box, the rotating shaft, the inner shell and the tower wall; the rotating shaft penetrates through the bearing box, one end of the rotating shaft is connected with the speed reducer, and the other end of the rotating shaft is connected with the propeller; the sealing device is arranged between the small opening of the inner shell and the rotating shaft; the cavity is connected with an air source through an air path. The utility model removes a mechanical sealing device, reduces the manufacturing cost of equipment, increases the size of a cantilever of a supporting bearing and a shortened shaft, enables a supporting point to displace towards the middle shaft of the desulfurizing tower, reduces the shaking and increases the stability of a shaft system.
Description
Technical Field
The utility model relates to the technical field of desulfurizing towers, in particular to a sealing device for a stirrer of a wet limestone desulfurizing tower.
Background
The main function of the power plant desulfurizing tower with the stirrer is to prevent solid particles from precipitating in the slurry pool through the stirring of the stirrer, and ensure that the slurry can be uniformly conveyed to the next process engineering; meanwhile, the diffusion of the oxidizing air is enhanced, and the oxidation of calcium sulfite, the growth of gypsum crystals and the dissolution of limestone are promoted. The selection of the desulfurizing tower stirrer is very critical, if the selection is improper, the calcium sulfite is not sufficiently oxidized, the limestone utilization rate is low, the desulfurizing efficiency and the quality of the generated gypsum are influenced, the stirrer is not uniformly stirred, the local deposition at the bottom of the tank is caused, the solution causes the cavitation erosion of the pump, and the high-concentration slurry possibly enters the pump to damage the pump.
The side of current desulfurizing tower advances to stir and selects mechanical seal usually to carry out and seal the isolation with the medium, because the arm of force of agitator is longer, at high-speed operation stirring in-process, the axle of agitator produces the vibration, in long-term use, easy wearing and tearing, and can lead to appearing the clearance between agitator and the tower wall, the leakage problem takes place, because mechanical seal belongs to the consumable part, often need change, the damage of agitator blade, axle, mechanical seal puzzles ignition power generation enterprise, unable safety and stability production, and simultaneously, the mechanical seal cost in the current desulfurizing tower is high.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the stirrer sealing device for the wet limestone desulfurization tower, which has the advantages of low cost, high stability, long service life and low maintenance cost.
The technical scheme for realizing the purpose of the utility model is as follows: a stirrer sealing device for a wet limestone desulfurization tower is provided with a stirrer arranged on the tower wall of the desulfurization tower; the stirrer comprises a driving motor, a speed reducer, a sealing device, a rotating shaft and a propeller which are connected in sequence; the sealing device comprises an outer shell, an inner shell, a bearing box and a sealing assembly; one end of the outer shell is fixedly connected with the tower wall through a fastener, and the other end of the outer shell is connected with the speed reducer through a fastener; the inner shell is conical and is fixedly connected with the tower wall through a fastener; the bearing box is arranged in the tower wall opening hole and is fixedly connected with the tower wall through a fastener, and a cavity is formed among the bearing box, the rotating shaft, the inner shell and the tower wall; the rotating shaft penetrates through the bearing box, one end of the rotating shaft is connected with the speed reducer, and the other end of the rotating shaft is connected with the propeller; the sealing device is arranged between the small opening of the inner shell and the rotating shaft; the cavity is connected with an air source through an air path.
The bearing box in the technical scheme comprises a shaft sleeve, a box body and a bearing; the bearing is arranged in the box body and assembled on the shaft sleeve; the box body is fixed on the tower wall through a locking nut.
According to the technical scheme, the sealing assembly is one or more of air seal, labyrinth seal, silica gel seal and star seal.
According to the technical scheme, one end of the gas path is communicated with the inner shell through the opening, and the other end of the gas path penetrates through the through hole in the tower wall and is externally connected with the gas source.
According to the technical scheme, one end of the air path penetrates through the tower wall located close to the box body, and the other end of the air path penetrates through the through hole in the outer shell and is externally connected with an air source.
In the technical scheme, the air source is oxidizing air or compressed air.
According to the technical scheme, one side of the bearing box is detachably provided with the sealing cover through the fastening piece.
According to the technical scheme, the bearing box and the gas seal side are sealed through the shaft sleeve and the framework oil seal.
After the technical scheme is adopted, the utility model has the following positive effects:
(1) the utility model removes the mechanical seal device, changes one fulcrum of the original mechanical seal and tower wall into the fulcrum of the front and rear bearing sets, avoids the mechanical contact of various fluid seals, reduces the equipment cost, increases the support bearing, reduces the cantilever size of the short shaft, makes the support point shift to the middle shaft of the desulfurizing tower, reduces the shake, and increases the stability of the shaft system; the maintenance cost of the equipment is reduced, the service life of the stirrer is prolonged, and the reliability and the system safety of the equipment are improved.
(2) The utility model uses the oxidizing air or the compressed air as the sealing air source, so that the slurry at the sealing position of the stirrer shaft is sealed by the pressure of the oxidizing air or the compressed air, the pressure and the flow can completely meet the sealing requirement, no slurry is leaked from the connecting position of the rotating shaft and the inner shell, and no mechanical seal is needed.
(3) The bearing in the bearing box is lubricated by lubricating grease, so that the rotating shaft is more stable, the supporting rigidity of the rotating shaft is improved, the shaking in operation is reduced, the mechanical fatigue of the rotating shaft is reduced, the service life of the rotating shaft is prolonged, and in order to replace the damaged bearing and the seal on line and realize the function of on-line repair, the whole bearing box can be drawn out from the opposite wheel side on line.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a bearing housing of the present invention;
FIG. 3 is a schematic structural diagram of embodiment 2 of the present invention;
Detailed Description
(example 1)
Referring to fig. 1 and 2, the present invention has an agitator installed on the wall of a desulfurization tower; the stirrer comprises a driving motor 1, a speed reducer 2, a sealing device, a rotating shaft 3 and a propeller 4 which are connected in sequence; the sealing device comprises an outer shell 5, an inner shell 6, a bearing box 7 and a sealing assembly 8; one end of the outer shell 5 is fixedly connected with the tower wall through a fastener, and the other end of the outer shell is connected with the speed reducer 2 through a fastener; the inner shell 6 is conical and is fixedly connected with the tower wall through a fastener; the bearing box 7 is arranged in the tower wall open hole and is fixedly connected with the tower wall through a fastener, and a cavity 10 is formed among the bearing box 7, the rotating shaft 3, the inner shell 6 and the tower wall; the rotating shaft 3 penetrates through the bearing box 7, one end of the rotating shaft is connected with the speed reducer 2, and the other end of the rotating shaft is connected with the propeller 4; the sealing device is arranged between the small opening of the inner shell 6 and the rotating shaft 3; the cavity 10 is connected with a gas source through a gas path 9.
The bearing box 7 comprises a shaft sleeve 12, a box body 13 and a bearing 14; the bearing 14 is arranged in the box body 13 and assembled on the shaft sleeve 12; the tank 13 is fixed to the tower wall by means of a locking nut 15.
One end of the gas path 9 is communicated with the inner shell 6 through an opening, and the other end of the gas path penetrates through a through hole on the tower wall and is externally connected with a gas source; the air source is oxidizing wind or compressed air.
One side of the bearing box 7 is detachably provided with a sealing cover 16 through a fastener; bearing box 7 and atmoseal side all add 11 oil seals of skeleton through the axle sleeve that corresponds, are convenient for can change on line and damage the bearing and seal.
The sealing component 8 is one or more of air seal, labyrinth seal, silica gel seal, star seal, etc.
(example 2)
Referring to fig. 3, this embodiment is substantially the same as embodiment 1, and its distinctive features are: one end of the air passage 9 penetrates through the tower wall close to the box body 13, and the other end of the air passage penetrates through a through hole in the outer shell 5 and is externally connected with an air source.
The working principle of the utility model is as follows: the slurry at the seal position of the stirrer shaft is sealed by the pressure of the oxidizing air or the compressed air, and the pressure pushes out the slurry which possibly enters the stirrer, so that the slurry is prevented from entering.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A stirrer sealing device for a wet limestone desulfurization tower is provided with a stirrer arranged on the tower wall of the desulfurization tower; the stirrer comprises a driving motor (1), a speed reducer (2), a sealing device, a rotating shaft (3) and a propeller (4) which are connected in sequence; the method is characterized in that: the sealing device comprises an outer shell (5), an inner shell (6), a bearing box (7) and a sealing assembly (8); one end of the outer shell (5) is fixedly connected with the tower wall through a fastener, and the other end of the outer shell is connected with the speed reducer (2) through a fastener; the inner shell (6) is conical and is fixedly connected with the tower wall through a fastener; the bearing box (7) is arranged in the tower wall open hole and fixedly connected with the tower wall through a fastener, and a cavity (10) is formed among the bearing box (7), the rotating shaft (3), the inner shell (6) and the tower wall; the rotating shaft (3) penetrates through the bearing box (7), one end of the rotating shaft is connected with the speed reducer (2), and the other end of the rotating shaft is connected with the propeller (4); the sealing device is arranged between the small opening of the inner shell (6) and the rotating shaft (3); the cavity (10) is connected with an air source through an air passage (9).
2. The agitator sealing device for a wet limestone desulfurization tower of claim 1, wherein: the bearing box (7) comprises a shaft sleeve (12), a box body (13) and a bearing (14); the bearing (14) is arranged in the box body (13) and assembled on the shaft sleeve (12); the box body (13) is fixed on the tower wall through a locking nut (15).
3. The agitator sealing device for a wet limestone desulfurization tower according to claim 1 or 2, wherein: the sealing component (8) is one or more of air seal, labyrinth seal, silica gel seal and star seal.
4. The agitator sealing device for a wet limestone desulfurization tower of claim 2, wherein: one end of the gas path (9) is communicated with the inner shell (6) through the opening, and the other end of the gas path penetrates through the through hole in the tower wall and is externally connected with a gas source.
5. The agitator sealing device for a wet limestone desulfurization tower of claim 2, wherein: one end of the air path (9) penetrates through the tower wall close to the box body (13), and the other end of the air path penetrates through a through hole in the outer shell (5) and is externally connected with an air source.
6. The agitator sealing device for a wet limestone desulfurization tower according to claim 4 or 5, wherein: the air source is oxidizing wind or compressed air.
7. The agitator sealing device for a wet limestone desulfurization tower according to claim 1 or 2, wherein: one side of the bearing box (7) is detachably provided with a sealing cover (16) through a fastener.
8. The agitator sealing device for a wet limestone desulfurization tower of claim 6, wherein: and the bearing box (7) and the gas seal side are sealed by the corresponding shaft sleeve and framework (11) oil seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120619539.0U CN215567942U (en) | 2021-03-26 | 2021-03-26 | Stirrer sealing device for wet limestone desulfurization tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120619539.0U CN215567942U (en) | 2021-03-26 | 2021-03-26 | Stirrer sealing device for wet limestone desulfurization tower |
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| Publication Number | Publication Date |
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| CN215567942U true CN215567942U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120619539.0U Active CN215567942U (en) | 2021-03-26 | 2021-03-26 | Stirrer sealing device for wet limestone desulfurization tower |
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| CN (1) | CN215567942U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228255A (en) * | 2022-08-04 | 2022-10-25 | 安徽雨辰机电制造有限公司 | Side-feeding type stirrer sealing device |
-
2021
- 2021-03-26 CN CN202120619539.0U patent/CN215567942U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228255A (en) * | 2022-08-04 | 2022-10-25 | 安徽雨辰机电制造有限公司 | Side-feeding type stirrer sealing device |
| CN115228255B (en) * | 2022-08-04 | 2023-09-15 | 安徽雨辰机电制造有限公司 | Side-entering stirrer sealing device |
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