CN210196465U - Coal slime holding vessel stirring shaft sealing device - Google Patents
Coal slime holding vessel stirring shaft sealing device Download PDFInfo
- Publication number
- CN210196465U CN210196465U CN201921274141.7U CN201921274141U CN210196465U CN 210196465 U CN210196465 U CN 210196465U CN 201921274141 U CN201921274141 U CN 201921274141U CN 210196465 U CN210196465 U CN 210196465U
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- framework oil
- labyrinth seal
- stirring
- storage tank
- fixedly connected
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Abstract
A coal slime storage tank stirring and stirring shaft sealing device is characterized in that a stirring speed reducer shell is fixedly connected to the middle of the bottom of a coal slime storage tank, a rotating shaft and the upper part of the stirring speed reducer shell extend into the coal slime storage tank, a framework oil seal cavity for placing a plurality of single-lip framework oil seals with upward lips is formed in the upper part of the stirring speed reducer shell, a labyrinth seal lower cover is sealed with the framework oil seal cavity through screws, and the labyrinth seal upper cover is movably connected with the labyrinth seal lower cover in a matched mode; the labyrinth seal upper cover is fixedly connected with the rotating shaft through a flat key, a small hole is formed in the middle lower part of the framework oil seal cavity, and the small hole is positioned between the two single-lip framework oil seals at the bottommost part and is fixedly connected with the high-pressure oil injection pipe; high-pressure lubricating oil with pressure slightly greater than static pressure of coal slurry in the coal slurry tank is continuously or regularly pumped in, and a small amount of coal slurry and water which leak into gaps of the labyrinth seal upper cover and the labyrinth seal lower cover and a framework oil seal cavity are discharged, so that the sealing device is protected, the maintenance frequency is reduced, and the production efficiency is improved.
Description
Technical Field
The utility model relates to a power plant mixes and burns agitating unit for coal slime specifically relates to a stirring of coal slime holding vessel dials material axle sealing device.
Background
Coal slime is required to be a mixture of coal slime and water with the water content of about 21% -25%, and the mixture of coal slime and water easily leaks from a sealing device of a stirring (stirring) shaft, so that the mixture enters a speed reducer, and equipment has to be stopped to overhaul. The period of stopping production and overhauling of each coal slime storage tank due to failure of the stirring (material stirring) shaft sealing device is about 6 months, the maintenance period is short, the maintenance environment is severe, and the workload is huge. Occupies a large amount of maintenance labor resources and simultaneously influences the normal production of the power plant.
In conclusion, how to solve the problems of short maintenance period, huge workload and the like of a coal slime or slurry storage tank due to a stirring (material stirring) shaft sealing device is a problem to be solved urgently by technical personnel in the field at present.
Patent name "unit head prevents mud sealing device" application No.: 2012103590143, the invention discloses a mud-proof sealing device of a power head, wherein the upper end of a power head box body is provided with an upper sealing gland, and a sealing cavity is arranged between a damping device and the power head box body; a labyrinth seal structure is arranged between the contact surfaces of the upper seal gland and the damping bottom plate; lubricating grease is filled in the sealing cavity and the labyrinth sealing structure, but the sealing effect of the labyrinth sealing is poor, the labyrinth sealing structure is not wear-resistant, and the labyrinth sealing structure is frequently replaced. Patent name "double bearing floating seal device" application No.: 2008101002850, in which an oil-passing threaded hole is provided on the right bearing seat of the stirring shaft, a non-skeleton oil seal is sequentially provided in the inner cavity, the stirring shaft bearing contact surface is communicated with the oil supply system joint, the floating seal device is filled with the required lubricating oil, the floating seal ring is floated by the lubricating oil, the floating seal ring is sleeved on the floating seal ring to control the loosening phenomenon, the effect is improved, but only one cavity is filled with the lubricating oil, and the floating seal ring is matched with one skeleton oil seal, the sealing effect is not ideal; in order to overcome the disadvantages, the following improvements are made.
Disclosure of Invention
The utility model aims at providing a coal slime holding vessel stirring axle sealing device to prior art not enough.
The utility model discloses a realize through following technological means: the utility model provides a coal slime holding vessel stirring dials material axle sealing device, includes coal slime holding vessel, high pressure oiling pipe, single lip skeleton oil blanket, skeleton oil blanket chamber, pivot, labyrinth seals lower cover, labyrinth seals upper cover, stirring and dials material arm, stirring speed reducer casing, play thick liquid pipe, its characterized in that:
a. the stirring speed reducer shell is fixedly connected to the middle of the bottom of the coal slurry storage tank, and the rotating shaft and the upper part of the stirring speed reducer shell extend into the coal slurry storage tank;
b. a framework oil seal cavity is arranged in the middle of the upper part of the shell of the stirring speed reducer, a plurality of single-lip framework oil seals are arranged in the framework oil seal cavity at equal intervals from bottom to top, the lips of the framework oil seals face upwards, a middle hole of the labyrinth seal lower cover is sleeved on a rotating shaft, the labyrinth seal lower cover is fixedly connected to the top of the shell of the stirring speed reducer through a screw, and the framework oil seal cavity is sealed;
c. the middle hole of the labyrinth seal upper cover is sleeved on the rotating shaft, so that the labyrinth seal upper cover is movably connected with the labyrinth seal lower cover in a matching way;
d. the two stirring arms are horizontally and symmetrically fixedly connected to the labyrinth seal upper cover;
e. the labyrinth seal upper cover is fixedly connected with the rotating shaft through a flat key.
And a small hole is formed in the middle lower part of the framework oil seal cavity, is positioned between the two single-lip framework oil seals at the bottommost part and is fixedly connected with the high-pressure oil injection pipe.
The framework oil seal cavity is cylindrical, and the inner diameter of the framework oil seal cavity is equal to the outer diameter of the single-lip framework oil seal.
The inner diameter of the single-lip framework oil seal is equal to the outer diameter of the rotating shaft.
The slurry outlet pipe is fixedly connected to the bottom of the coal slurry storage tank, and a valve is arranged on the slurry outlet pipe.
In practical application, a plurality of single-lip framework oil seals are placed in a framework oil seal cavity at equal intervals, the lip edges of the framework oil seals face upwards, then an elastic sealing gasket or an elastic sealing ring is arranged between a labyrinth seal lower cover and a contact surface of the top of a stirring speed reducer shell and is fastened together by screws, so that the framework oil seal cavity is sealed, then the labyrinth seal upper cover is placed on the upper portion of the labyrinth seal lower cover in a matching manner, the labyrinth seal upper cover is fixedly connected with a rotating shaft by a flat key, lubricating oil is injected into the framework oil seal cavity by a high-pressure oil injection machine through a high-pressure oil injection pipe after the installation is finished, and the stirring speed reducer can be operated by; the coal slurry in the coal slurry storage tank has the tendency of fine coal slurry particles, water and other fine particles to permeate from the labyrinth seal and the single-lip framework oil seal and the rotating shaft due to the action of gravity, the lip edges of the placed single-lip framework oil seals face upwards, so that the single-lip framework oil seals have reverse sealing functions, injected high-pressure lubricating oil moves in the reverse direction, the pressure of the high-pressure lubricating oil is controlled to enable the pressure of the high-pressure lubricating oil to be slightly greater than that of the coal slurry, the mixture of the fine coal slurry particles, the water and other fine particles cannot permeate from the labyrinth seal and the joint of the single-lip framework oil seal and the rotating shaft under the condition, a small amount of high-pressure lubricating oil continuously overflows from the joint of the labyrinth seal upper cover and the labyrinth seal lower cover, and trace permeated fine coal slurry particles and the water are carried out, so that the friction between the fine coal slurry particles and the labyrinth seal and the single-lip framework oil seal is avoided, the sealing device is protected, the service life of the sealing device is greatly prolonged, the maintenance frequency is reduced, and the production efficiency is certainly improved.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various changes without departing from the scope of the present invention.
Drawings
FIG. 1 is a schematic structural view of the present invention in use;
FIG. 2 is an enlarged view of the contact between a single-lip framework oil seal and a rotating shaft and a framework oil seal cavity.
In the figure: 1-high-pressure oil injection pipe, 2-single-lip framework oil seal, 3-labyrinth seal lower cover, 4-stirring arm, 5-labyrinth seal upper cover, 6-framework oil seal cavity, 7-rotating shaft, 8-stirring speed reducer shell, 9-coal slime storage tank, 10-slurry outlet pipe and 11-valve.
Detailed Description
The invention will be described in further detail with reference to the following description and embodiments with reference to the accompanying drawings:
as shown in the drawings, in the figures,
the utility model provides a coal slime holding vessel stirring dials material axle sealing device, includes that coal slime holding vessel 9, high pressure oiling pipe 1, single lip skeleton oil blanket 2, labyrinth seal lower cover 3, labyrinth seal upper cover 5, stirring dial material arm 4, skeleton oil blanket chamber 6, pivot 7, stirring speed reducer casing 8, play thick liquid pipe 10, its characterized in that:
a. the stirring speed reducer shell 8 is fixedly connected to the middle of the bottom of the coal slime storage tank 9, and the rotating shaft 7 and the upper part of the stirring speed reducer shell 8 extend into the coal slime storage tank 9;
b. a framework oil seal cavity 6 is arranged in the middle of the upper part of a stirring speed reducer shell 8, a plurality of single-lip framework oil seals 2 are arranged in the framework oil seal cavity 6 at equal intervals from bottom to top, a rotating shaft 7 is sleeved in a middle hole of a labyrinth seal lower cover 3, the labyrinth seal lower cover 3 is fixedly connected to the top of the stirring speed reducer shell 8 through a screw, and the framework oil seal cavity 6 is sealed;
c. the middle hole of the labyrinth seal upper cover 5 is sleeved on the rotating shaft 7, so that the labyrinth seal upper cover 5 is movably connected with the labyrinth seal lower cover 3 in a matching way;
d. the two stirring arms 4 are horizontally and symmetrically fixedly connected to the labyrinth seal upper cover 5;
e. the labyrinth seal upper cover 5 is fixedly connected with the rotating shaft 7 through a flat key.
The middle lower part of the framework oil seal cavity is provided with a small hole which is positioned between the two single-lip framework oil seals 2 at the bottommost part and is fixedly connected with the high-pressure oil injection pipe 1.
The framework oil seal cavity 6 is cylindrical, and the inner diameter of the framework oil seal cavity is equal to the outer diameter of the single-lip framework oil seal 2.
The inner diameter of the single-lip framework oil seal 2 is equal to the outer diameter of the rotating shaft 7.
The slurry outlet pipe 10 is fixedly connected to the bottom of the coal slurry storage tank 9, and a valve 11 is arranged on the slurry outlet pipe 10.
In practical production application, a plurality of single-lip framework oil seals 2 are placed in a framework oil seal cavity 6 at equal intervals, then an elastic sealing gasket or an elastic sealing ring is arranged between a labyrinth seal lower cover 3 and a contact surface of the top of a stirring speed reducer shell 8 and is fastened together by screws, so that the framework oil seal cavity 6 is sealed, then a labyrinth seal upper cover 5 is placed on the upper portion of the labyrinth seal lower cover 3 in a matching manner, the labyrinth seal upper cover 5 is fixedly connected with a rotating shaft 7 by a flat key, lubricating oil is injected into the framework oil seal cavity 6 through a high-pressure oil injection pipe 2 by a high-pressure oil injection machine after the installation is finished, and the stirring speed reducer can be operated by starting the stirring speed reducer; the coal slurry in the coal slurry storage tank 9 has the tendency of fine coal slurry particles, water and other fine particles to permeate from the labyrinth seal and the single-lip framework oil seal 2 and the rotating shaft 7 under the action of gravity, and the lip edges of the placed single-lip framework oil seals face upwards, so that the single-lip framework oil seals have reverse sealing functions, so that the injected high-pressure lubricating oil moves in the opposite direction, the pressure of the high-pressure lubricating oil is controlled to enable the pressure of the high-pressure lubricating oil to be slightly greater than that of the coal slurry, under the condition, the mixture of the fine coal slurry particles, water and other fine particles cannot permeate from the labyrinth seal and the joint of the single-lip framework oil seal 2 and the rotating shaft 7, and a small amount of the high-pressure lubricating oil continuously overflows from the joint of the labyrinth seal upper cover 5 and the labyrinth seal lower cover 3 to carry out the fine coal slurry particles and water which are permeated in a small amount, thereby the friction of tiny coal slime particles with labyrinth seal and single-lip framework oil seal 2 is avoided, the sealing device is protected, the service life of the sealing device is greatly prolonged, the maintenance frequency is reduced, and the production efficiency is certainly improved.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, which are only illustrative, but also various changes and modifications may be made without departing from the spirit and scope of the present invention, which fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.
Claims (5)
1. The utility model provides a coal slime holding vessel stirring dials material axle sealing device, includes coal slime holding vessel, high pressure oiling pipe, single lip skeleton oil blanket, skeleton oil blanket chamber, pivot, labyrinth seals lower cover, labyrinth seals upper cover, stirring and dials material arm, stirring speed reducer casing, play thick liquid pipe, its characterized in that:
a. the stirring speed reducer shell is fixedly connected to the middle of the bottom of the coal slurry storage tank, and the rotating shaft and the upper part of the stirring speed reducer shell extend into the coal slurry storage tank;
b. a framework oil seal cavity is arranged in the middle of the upper part of the shell of the stirring speed reducer, a plurality of single-lip framework oil seals are arranged in the framework oil seal cavity at equal intervals from bottom to top, the lips of the framework oil seals face upwards, a middle hole of the labyrinth seal lower cover is sleeved on a rotating shaft, the labyrinth seal lower cover is fixedly connected to the top of the shell of the stirring speed reducer through a screw, and the framework oil seal cavity is sealed;
c. the middle hole of the labyrinth seal upper cover is sleeved on the rotating shaft, so that the labyrinth seal upper cover is movably connected with the labyrinth seal lower cover in a matching way;
d. the two stirring arms are horizontally and symmetrically fixedly connected to the labyrinth seal upper cover;
e. the labyrinth seal upper cover is fixedly connected with the rotating shaft through a flat key.
2. The coal slime storage tank stirring shaft sealing device of claim 1, characterized in that: and a small hole is formed in the middle lower part of the framework oil seal cavity, is positioned between the two single-lip framework oil seals at the bottommost part and is fixedly connected with the high-pressure oil injection pipe.
3. The coal slime storage tank stirring shaft sealing device of claim 1, characterized in that: the framework oil seal cavity is cylindrical, and the inner diameter of the framework oil seal cavity is equal to the outer diameter of the single-lip framework oil seal.
4. The coal slime storage tank stirring shaft sealing device of claim 1, characterized in that: the inner diameter of the single-lip framework oil seal is equal to the outer diameter of the rotating shaft.
5. The coal slime storage tank stirring shaft sealing device of claim 1, characterized in that: the slurry outlet pipe is fixedly connected to the bottom of the coal slurry storage tank, and a valve is arranged on the slurry outlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274141.7U CN210196465U (en) | 2019-08-06 | 2019-08-06 | Coal slime holding vessel stirring shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921274141.7U CN210196465U (en) | 2019-08-06 | 2019-08-06 | Coal slime holding vessel stirring shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210196465U true CN210196465U (en) | 2020-03-27 |
Family
ID=69865847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921274141.7U Expired - Fee Related CN210196465U (en) | 2019-08-06 | 2019-08-06 | Coal slime holding vessel stirring shaft sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210196465U (en) |
-
2019
- 2019-08-06 CN CN201921274141.7U patent/CN210196465U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200327 Termination date: 20200806 |
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| CF01 | Termination of patent right due to non-payment of annual fee |