CN211082852U - Side-feeding type stirrer mechanical seal - Google Patents
Side-feeding type stirrer mechanical seal Download PDFInfo
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- CN211082852U CN211082852U CN201922233796.6U CN201922233796U CN211082852U CN 211082852 U CN211082852 U CN 211082852U CN 201922233796 U CN201922233796 U CN 201922233796U CN 211082852 U CN211082852 U CN 211082852U
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Abstract
The utility model provides a side-feeding stirrer mechanical seal, which comprises a shaft sleeve, wherein a main seal, an auxiliary seal, a double-grain self-aligning roller bearing and an oil seal cover are sequentially sleeved outside the shaft sleeve; the outer part of the main seal is sleeved with a machine base, the outer part of the auxiliary seal is sleeved with a flange, and two ends of the flange are respectively connected with the machine base and the oil seal cover; the driving ring of the main seal is connected with one end of the shaft sleeve, and the main static ring of the main seal is connected with the engine base; an auxiliary static ring of the auxiliary seal is connected with the flange, and an auxiliary moving ring of the auxiliary seal is connected with the shaft sleeve; a liquid communicating groove is defined between the main seal and the auxiliary seal, a flushing liquid inlet and a flushing liquid outlet are arranged on the flange, and the flushing liquid inlet and the flushing liquid outlet are respectively communicated with the liquid communicating groove; the inner side and the outer side of the bearing are respectively connected with the shaft sleeve and the flange, the bearing, the oil seal cover and the shaft sleeve jointly define an oil seal groove, an oil nozzle is arranged on the oil seal cover, and the oil nozzle is communicated with the oil seal groove. The utility model discloses sealed effectual, long service life, it is little to the (mixing) shaft damage, use cost is low.
Description
Technical Field
The utility model relates to a sealing equipment technical field, concretely relates to formula agitator mechanical seal is advanced to side for install the atmosphere end at formula agitating unit is advanced to side.
Background
The side-feeding stirrer is a key device in the flue gas desulfurization absorption tower, is arranged on the side surface of the absorption tower, stirs desulfurization liquid, and is widely applied to the technical fields of flue gas desulfurization of power plants, petrochemical industry, paper-making industry and the like. Because the flue gas desulfurization process requires, the stirrer is continuously operated, the shutdown detection is not allowed during the operation, for example, slurry leakage is prevented during maintenance, and a method is needed to block the arrangement hole of the stirrer, so that the service life requirement of the used mechanical seal is higher.
In the prior art, a side-entry stirrer mechanical seal generally adopts a single-end face cartridge mechanical seal and is provided with a bearing support, and the mechanical seal cannot be normally lubricated in the normal operation process, so that a medium is precipitated on a sealing surface, and the service life of the mechanical seal is influenced; moreover, a deep groove ball bearing is usually adopted, the stirring shaft cannot be aligned, and the stirring shaft is easy to break due to large vibration of the stirrer during working, so that the cost is increased; in addition, during maintenance, the machine must be stopped firstly, then slurry overflows into other standby absorption towers, the mechanical sealing device cannot be replaced during online operation, time and labor are wasted during maintenance, and the cost is high.
SUMMERY OF THE UTILITY MODEL
For solving the problem that exists among the above-mentioned prior art, the utility model provides a side formula agitator mechanical seal that advances, it is sealed effectual, long service life, it is little to the (mixing) shaft damage, use cost is low.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a side-feeding stirrer mechanical seal comprises a shaft sleeve, wherein a main seal, an auxiliary seal, a double-grain self-aligning roller bearing and an oil seal cover are sequentially sleeved outside the shaft sleeve;
the outer part of the main seal is sleeved with a machine base, the outer part of the auxiliary seal is sleeved with a flange, and two ends of the flange are respectively connected with the machine base and the oil seal cover;
the outer side of a main driving ring of the main seal is connected with one end of the shaft sleeve, and the outer side of a main static ring of the main seal is connected with the engine base; the outer side of an auxiliary static ring of the auxiliary seal is connected with the flange, and the inner side of an auxiliary moving ring of the auxiliary seal is connected with the shaft sleeve;
a liquid passing groove is defined between the main seal and the auxiliary seal, a flushing liquid inlet and a flushing liquid outlet are formed in the flange, and the flushing liquid inlet and the flushing liquid outlet are respectively communicated with the liquid passing groove;
the inner side and the outer side of the bearing are respectively connected with the shaft sleeve and the flange, the bearing, the oil seal cover and the shaft sleeve jointly limit an oil seal groove, an oil nozzle is arranged on the oil seal cover, and the oil nozzle is communicated with the oil seal groove.
Further, the one end of bearing is equipped with the U-shaped groove that extends to the outside, the U-shaped inslot is equipped with the position circle, the one end of initiative ring be equipped with the constant head tank that the position circle corresponds.
Furthermore, a spring seat is arranged between the auxiliary rotating ring and the bearing, the inner side of the spring seat is connected with the shaft sleeve, a first spring is arranged in the spring seat, and two ends of the first spring are respectively connected with the spring seat and the auxiliary rotating ring.
Furthermore, a second spring is arranged between one end of the main static ring, which is far away from the driving ring, and the machine base.
Furthermore, a locking ring is sleeved on the outer side of one end, far away from the main seal, of the shaft sleeve.
Further, sealing rings are arranged between the driving ring and the shaft sleeve, between the driving static ring and the base, between the auxiliary static ring and the flange and between the auxiliary moving ring and the shaft sleeve.
Compared with the prior art, the beneficial effects of the utility model are that: the side-feeding stirrer mechanical seal adopts a double-end-face mechanical seal structure, if the main seal fails, the auxiliary seal continues to work, and the sealing effect is ensured; the liquid through groove is arranged to lubricate the sealing surface of the mechanical seal, so that the medium is prevented from being deposited on the seal grinding surface, and the service life of the mechanical seal is prolonged; in addition, the double-grain self-aligning roller bearing is adopted, so that the self-aligning can be realized, the vibration of the stirrer is reduced, the mechanical seal works under the stable condition, and the damage to the stirring shaft is reduced.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.
In the figure: 1-shaft sleeve, 2-driving ring, 3-main stationary ring, 4-engine base, 5-flange, 6-flushing fluid outlet, 7-second spring, 8-first spring, 9-spring seat, 10-oil seal cover, 11-oil nozzle, 12-locking ring, 13-oil seal groove, 14-bearing, 15-auxiliary moving ring, 16-auxiliary stationary ring, 17-liquid through groove, 18-flushing fluid inlet, 19-sealing ring and 20-positioning ring.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, a side-entry mechanical seal of a mixer comprises a shaft sleeve 1, wherein the shaft sleeve 1 is sleeved on a mixing shaft;
specifically, a main seal, an auxiliary seal, a double-grain self-aligning roller bearing 14 and an oil seal cover 10 are sequentially sleeved outside the shaft sleeve 1;
the main seal comprises a driving ring 2 and a main static ring 3, wherein one end of the driving ring 2 is connected with one end of the main static ring 3 to form a main seal surface; the auxiliary seal comprises an auxiliary movable ring 15 and an auxiliary static ring 16, wherein one end of the auxiliary movable ring 15 is connected with one end of the auxiliary static ring 16 to form an auxiliary sealing surface; the inner sides of the driving ring 2, the main static ring 3 and the auxiliary static ring 16 are not in contact with the outer side of the shaft sleeve 1;
the double-end-face mechanical sealing structure is adopted, namely a main seal and an auxiliary seal, when the main seal fails, the auxiliary seal can continue to work, and the mechanical seal can continue to work;
the double-grain self-aligning roller bearing 14 capable of automatically aligning is adopted, so that the aligning of the stirring shaft can be automatically performed, the vibration of the stirrer is reduced, the mechanical seal is ensured to work under the stable condition, and the phenomenon of fracture of the stirring shaft is effectively prevented;
the outer part of the main seal is sleeved with a machine base 4, the outer part of the auxiliary seal is sleeved with a flange 5, and two ends of the flange 5 are respectively connected with the machine base 4 and an oil seal cover 10;
the outer side of the driving ring 2 is connected with one end of the shaft sleeve 1, and the outer side of the main static ring 3 is connected with the machine base 4; the outer side of the auxiliary static ring 16 is connected with the flange 5, and the inner side of the auxiliary dynamic ring 15 is connected with the shaft sleeve 1;
the driving ring 2, the main static ring 3, the machine base 4, the flange 5, the auxiliary static ring 16, the auxiliary moving ring 15 and the shaft sleeve 1 jointly define a liquid through groove 17, a flushing liquid inlet 18 and a flushing liquid outlet 6 are arranged on the flange 5, and the flushing liquid inlet 18 and the flushing liquid outlet 6 are respectively communicated with the liquid through groove 17;
flushing liquid enters the liquid through groove 17 from the flushing liquid inlet 18 and flows out from the flushing liquid outlet 6; the flushing liquid in the liquid passing groove 17 can lubricate the main sealing surface and the auxiliary sealing surface, and prevents a medium from precipitating on the main sealing surface or the auxiliary sealing surface to cause damage to the main sealing surface or the auxiliary sealing surface and influence on the service life of the mechanical seal;
the inner side and the outer side of a bearing 14 are respectively connected with a shaft sleeve 1 and a flange 5, the bearing 14, an oil seal cover 10 and the shaft sleeve 1 jointly define an oil seal groove 13, an oil nozzle 11 is arranged on the oil seal cover 10, and the oil nozzle 11 is communicated with the oil seal groove 13;
when in use, oil can be introduced into the oil seal groove 13 through the oil nozzle 11 to form an oil seal, so that the sealing effect of mechanical sealing is further improved.
In an embodiment of the present invention, one end of the bearing 14 is provided with a U-shaped groove extending outward, a positioning ring 20 is disposed in the U-shaped groove, and one end of the driving ring 2 is provided with a positioning groove corresponding to the positioning ring 20; the U-shaped groove is used for placing the driving ring 2, and the positioning ring 20 and the positioning groove are matched with each other to limit the position of the driving ring 2 in the U-shaped groove, so that the outer side of the driving ring 2 is kept in contact with the shaft sleeve 1.
Preferably, a spring seat 9 is arranged between the auxiliary rotating ring 15 and the bearing 14, the inner side of the spring seat 9 is connected with the shaft sleeve 1, a first spring 8 is arranged in the spring seat 9, and two ends of the first spring 8 are respectively connected with the spring seat 9 and the auxiliary rotating ring 15; the spring seat 9 is fixedly connected with the shaft sleeve 1, and the first spring 8 is used for extruding the auxiliary movable ring 15 towards the auxiliary stationary ring 16, so that the auxiliary stationary ring 16 is kept in contact with the auxiliary movable ring 15, and the sealing effect of auxiliary sealing is ensured.
In the utility model discloses a another embodiment, be equipped with second spring 7 between the one end that main quiet ring 3 kept away from driving ring 2 and frame 4, second spring 7 is used for with main quiet ring 3 to driving ring 2 extrusion, is the holding contact between the two, ensures the sealed effect of main sealing.
In some embodiments of the present invention, a locking ring 12 is sleeved outside one end of the shaft sleeve 1 away from the main seal, and the locking ring 12 is used for locking the shaft sleeve 1 on the stirring shaft; the locking ring 12 can be adjusted through bolts, so that the mechanical seal can be installed and disassembled, and the use is convenient.
Optionally, sealing rings 19 are respectively arranged between the driving ring 2 and the shaft sleeve 1, between the main stationary ring 3 and the base 4, between the auxiliary stationary ring 16 and the flange 5, and between the auxiliary moving ring 15 and the shaft sleeve 1, so that the sealing effect of the mechanical seal is further improved.
The side-feeding stirrer mechanical seal adopts a double-end-face mechanical seal structure, if the main seal fails, the auxiliary seal continues to work, and the sealing effect is ensured; the liquid through groove is arranged to lubricate the sealing surface of the mechanical seal, so that the medium is prevented from being deposited on the seal grinding surface, and the service life of the mechanical seal is prolonged; in addition, the double-grain self-aligning roller bearing is adopted, so that the self-aligning can be realized, the vibration of the stirrer is reduced, the mechanical seal works under the stable condition, and the damage to the stirring shaft is reduced.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A side-feeding stirrer mechanical seal is characterized by comprising a shaft sleeve, wherein a main seal, an auxiliary seal, a double-grain self-aligning roller bearing and an oil seal cover are sequentially sleeved outside the shaft sleeve;
the outer part of the main seal is sleeved with a machine base, the outer part of the auxiliary seal is sleeved with a flange, and two ends of the flange are respectively connected with the machine base and the oil seal cover;
the outer side of a main driving ring of the main seal is connected with one end of the shaft sleeve, and the outer side of a main static ring of the main seal is connected with the engine base; the outer side of an auxiliary static ring of the auxiliary seal is connected with the flange, and the inner side of an auxiliary moving ring of the auxiliary seal is connected with the shaft sleeve;
a liquid passing groove is defined between the main seal and the auxiliary seal, a flushing liquid inlet and a flushing liquid outlet are formed in the flange, and the flushing liquid inlet and the flushing liquid outlet are respectively communicated with the liquid passing groove;
the inner side and the outer side of the bearing are respectively connected with the shaft sleeve and the flange, the bearing, the oil seal cover and the shaft sleeve jointly limit an oil seal groove, an oil nozzle is arranged on the oil seal cover, and the oil nozzle is communicated with the oil seal groove.
2. A side entry agitator mechanical seal as defined in claim 1, wherein one end of the bearing is provided with a U-shaped groove extending outwardly, the U-shaped groove being provided with a locating ring, one end of the driving ring being provided with a locating groove corresponding to the locating ring.
3. A side entry mixer mechanical seal according to claim 1 wherein a spring seat is provided between said secondary moving ring and said bearing, the inner side of said spring seat being connected to said bushing, a first spring being provided within said spring seat, the ends of said first spring being connected to said spring seat and said secondary moving ring, respectively.
4. A side entry mixer mechanical seal as claimed in claim 1 wherein a second spring is provided between the end of the main stationary ring remote from the active ring and the housing.
5. A side entry mixer mechanical seal according to claim 1, wherein a locking ring is fitted over the outer side of the end of said sleeve remote from said main seal.
6. A side entry mixer mechanical seal according to claim 1, wherein sealing rings are disposed between the driving ring and the bushing, between the main stationary ring and the housing, between the auxiliary stationary ring and the flange, and between the auxiliary moving ring and the bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922233796.6U CN211082852U (en) | 2019-12-13 | 2019-12-13 | Side-feeding type stirrer mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922233796.6U CN211082852U (en) | 2019-12-13 | 2019-12-13 | Side-feeding type stirrer mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211082852U true CN211082852U (en) | 2020-07-24 |
Family
ID=71644042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922233796.6U Active CN211082852U (en) | 2019-12-13 | 2019-12-13 | Side-feeding type stirrer mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211082852U (en) |
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2019
- 2019-12-13 CN CN201922233796.6U patent/CN211082852U/en active Active
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