CN212868452U - Mechanical sealing device for oxygen pressure leaching autoclave - Google Patents
Mechanical sealing device for oxygen pressure leaching autoclave Download PDFInfo
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- CN212868452U CN212868452U CN202021433659.3U CN202021433659U CN212868452U CN 212868452 U CN212868452 U CN 212868452U CN 202021433659 U CN202021433659 U CN 202021433659U CN 212868452 U CN212868452 U CN 212868452U
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- ring
- circulating water
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- water jacket
- oxygen pressure
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Abstract
The utility model discloses an oxygen pressure leaching autoclave mechanical sealing device, which comprises a shaft sleeve fixedly sleeved on a main shaft, a movable ring and a static ring which are used for matching sealing; an installation groove is formed in the inner ring surface at the bottom end of the circulating water jacket, and a framework oil seal is installed in the installation groove; the framework oil seal, the circulating water jacket, the shaft sleeve, the static ring and the dynamic ring form a gap in a surrounding mode, and a pressure relief hole and a liquid discharge hole which reach the gap are formed in the circulating water jacket. The mechanical sealing device of the oxygen pressure leaching autoclave with the structure limits the flow of the medium leaked from the medium end of the sealing device into the gap between the main shaft and the circulating water jacket and prevents the medium from flowing back. The pressure in the gap is reduced, and meanwhile, the cooling water in the cooling water circulation cavity in the water circulation sleeve continuously circulates to cool the medium in the gap, so that the temperature in the gap is reduced.
Description
Technical Field
The utility model relates to a mechanical seal device.
Background
The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage. The shaft seal has many kinds, and the mechanical seal has the advantages of small leakage amount, long service life and the like, so the mechanical seal is the most important shaft sealing mode in the devices in the world. Mechanical seals, also called face seals, are defined in the relevant national standards as follows: "means for preventing fluid leakage, which is composed of at least one pair of end faces perpendicular to the rotation axis, and which are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. "
The sealing medium with high temperature and high pressure in the existing high-temperature high-pressure autoclave can not be cooled well in the space gap between the circulating water jacket and the main shaft. The dynamic ring and the static ring can bear higher pressure and temperature all the time, the using effect of the mechanical seal is influenced, and the continuous using effect of the mechanical seal is not good.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an oxygen pressure leaching autoclave mechanical seal device utilizes the skeleton oil blanket to reduce the pressure in the clearance between circulating water jacket and the main shaft to utilize recirculated cooling water to cool off the medium in the intermittent type.
In order to solve the technical problem, the technical proposal of the utility model is to adopt an oxygen pressure leaching autoclave mechanical sealing device, which comprises a shaft sleeve fixedly sleeved on a main shaft, a movable ring and a static ring which are used for matching sealing; the static ring is fixed on the circulating water sleeve, the dynamic ring is fixed on the shaft sleeve, a cooling water circulating cavity is formed in the circulating water sleeve, and a connecting pipe communicated with the cooling water circulating cavity is arranged on the circulating water sleeve; an installation groove is formed in the inner ring surface at the bottom end of the circulating water jacket, and a framework oil seal is installed in the installation groove; the framework oil seal, the circulating water jacket, the shaft sleeve, the static ring and the dynamic ring form a gap in a surrounding mode, and a pressure relief hole and a liquid discharge hole which reach the gap are formed in the circulating water jacket.
As an improvement, the pressure relief hole is arranged at the upper end of the circulating water jacket, and the liquid discharge hole is arranged at the lower end of the circulating water jacket. Because the clearance has certain pressure, set up the pressure release hole and utilize the medium discharge when the pressure release above the circulation water jacket.
As a further improvement, the framework oil seal comprises an annular framework, and a rubber layer is laid on the framework; the clamping device also comprises a clamping spring for fastening the annular framework on the main shaft.
As another further improvement, the rear end of the movable ring is provided with a pre-tightening spring for pre-tightening.
As an improvement, a push ring is arranged between the pre-tightening spring and the movable ring. The push ring is favorable for the transmission of the pre-tightening force of the pre-tightening spring.
As an improvement, the static ring is fixed on the circulating water sleeve by a static ring gland.
As an improvement, the oil seal mounting structure further comprises a baffle ring used for fixing the framework oil seal in the mounting groove. The framework oil seal is prevented from sliding down along with the main shaft when in operation.
The utility model discloses an useful part lies in: the mechanical sealing device of the oxygen pressure leaching autoclave with the structure limits the flow of the medium leaked from the medium end of the sealing device into the gap between the main shaft and the circulating water jacket and prevents the medium from flowing back. The pressure in the gap is reduced, and meanwhile, the cooling water in the cooling water circulation cavity in the water circulation sleeve continuously circulates to cool the medium in the gap, so that the temperature in the gap is reduced. When necessary, the pressure relief hole can be opened to relieve pressure, so that the sealing performance is prevented from being influenced by overhigh pressure in the gap. After the machine is stopped, the gap can be washed through the pressure relief hole and the liquid discharge hole, corrosion of the medium to the seal is reduced, and the service life of the mechanical sealing device is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The labels in the figure are: the device comprises a framework oil seal 1, a circulating water jacket 2, a connecting pipe 3, a cooling water circulating cavity 4, a pressure relief hole 5, a shaft sleeve 6, a static ring 7, a static ring gland 8, a movable ring 9, a push ring 10, a main shaft 11, a pre-tightening spring 12, a liquid discharge hole 13, a gap 14 and a retaining ring 15.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.
As shown in fig. 1, the present invention comprises a shaft sleeve 6 fixedly sleeved on a main shaft 11, and a movable ring 9 and a stationary ring 7 for matching and sealing; the static ring 7 is fixed on the circulating water jacket 2, and the dynamic ring 9 is fixed on the shaft sleeve 6; specifically, the stationary ring 7 is fixed to the circulating water jacket 2 with a stationary ring gland 8. The rear end of the movable ring 9 is provided with a pre-tightening spring 12 for pre-tightening. A push ring 10 is arranged between the pre-tightening spring 12 and the movable ring 9. A cooling water circulation cavity 4 is formed in the circulation water jacket 2, and a connecting pipe 3 communicated with the cooling water circulation cavity 4 is arranged on the circulation water jacket 2; an installation groove is formed in the inner ring surface at the bottom end of the circulating water jacket 2, and a framework oil seal 1 is installed in the installation groove; and the framework oil seal also comprises a baffle ring 15 used for fixing the framework oil seal 1 in the installation groove. A clearance 14 is defined by the framework oil seal 1, the circulating water jacket 2, the shaft sleeve 6, the static ring 7 and the movable ring 9, and a pressure relief hole 5 and a liquid discharge hole 13 which reach the clearance 14 are formed in the circulating water jacket 2. The pressure relief hole 5 is arranged at the upper end of the circulating water jacket 2, and the liquid discharge hole 13 is arranged at the lower end of the circulating water jacket 2.
The framework oil seal 1 comprises an annular framework, and a rubber layer is laid on the framework; the clamping device also comprises a clamping spring for fastening the annular framework on the main shaft. Because skeleton oil blanket 1 is prior art, the utility model discloses in no longer describe.
When the sealing device works, the movable ring 9 and the static ring 7 are matched and sealed. The pressure relief hole 5 and the liquid discharge hole 13 on the circulating water jacket 2 are normally closed. The framework oil seal 1 limits the flow of the medium, reduces the medium entering the gap 14, and prevents the medium in the gap 14 from flowing back to the medium end. In this way, the leaking medium will be consistently maintained in the gap 14. The medium can be continuously cooled by the cooling water in the cooling water circulation cavity 4, and then the pressure and temperature of the leaking medium are further reduced. Under the environment of lower pressure and temperature, the stability of the mechanical seal can be obviously improved.
During or after the use of the equipment, the sealing medium fluid subjected to temperature reduction and pressure reduction in the gap 14 can be discharged or subjected to pressure reduction treatment by opening a switch of a pipeline connected with the pressure relief hole 5 and the liquid discharge hole 13. When the machine is stopped, proper liquid can be input through the two-hole connecting pipeline to simply flush the gap 14, a proper stopping environment is created for the mechanical seal, and the continuous corrosion of a medium to the seal is prevented from influencing the use of the mechanical seal.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (7)
1. A mechanical sealing device of an oxygen pressure leaching autoclave comprises a shaft sleeve fixedly sleeved on a main shaft, a movable ring and a static ring which are used for matching sealing; the quiet ring is fixed on the circulating water cover, the rotating ring is fixed on the axle sleeve, its characterized in that: a cooling water circulation cavity is formed in the circulating water sleeve, and a connecting pipe communicated with the cooling water circulation cavity is arranged on the circulating water sleeve; an installation groove is formed in the inner ring surface at the bottom end of the circulating water jacket, and a framework oil seal is installed in the installation groove; the framework oil seal, the circulating water jacket, the shaft sleeve, the static ring and the dynamic ring form a gap in a surrounding mode, and a pressure relief hole and a liquid discharge hole which reach the gap are formed in the circulating water jacket.
2. The oxygen pressure leaching autoclave mechanical seal device according to claim 1, wherein: the pressure relief hole is arranged at the upper end of the circulating water jacket, and the liquid discharge hole is arranged at the lower end of the circulating water jacket.
3. The oxygen pressure leaching autoclave mechanical seal device according to claim 1, wherein: the framework oil seal comprises an annular framework, and a rubber layer is laid on the framework; the clamping device also comprises a clamping spring for fastening the annular framework on the main shaft.
4. The oxygen pressure leaching autoclave mechanical seal device according to claim 1, wherein: and a pre-tightening spring for pre-tightening is arranged at the rear end of the movable ring.
5. The oxygen pressure leaching autoclave mechanical seal device according to claim 4, wherein: and a push ring is arranged between the pre-tightening spring and the movable ring.
6. The oxygen pressure leaching autoclave mechanical seal device according to claim 1, wherein: the static ring is fixed on the circulating water sleeve by utilizing the static ring gland.
7. The oxygen pressure leaching autoclave mechanical seal device according to claim 1, wherein: the oil seal mounting structure further comprises a baffle ring used for fixing the framework oil seal in the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021433659.3U CN212868452U (en) | 2020-07-20 | 2020-07-20 | Mechanical sealing device for oxygen pressure leaching autoclave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021433659.3U CN212868452U (en) | 2020-07-20 | 2020-07-20 | Mechanical sealing device for oxygen pressure leaching autoclave |
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| Publication Number | Publication Date |
|---|---|
| CN212868452U true CN212868452U (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021433659.3U Active CN212868452U (en) | 2020-07-20 | 2020-07-20 | Mechanical sealing device for oxygen pressure leaching autoclave |
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| Country | Link |
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| CN (1) | CN212868452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000477A1 (en) * | 2021-07-23 | 2023-01-26 | 华工(江门)机电有限公司 | Mounting seat, electric-motor mounting structure, and inline pump |
-
2020
- 2020-07-20 CN CN202021433659.3U patent/CN212868452U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000477A1 (en) * | 2021-07-23 | 2023-01-26 | 华工(江门)机电有限公司 | Mounting seat, electric-motor mounting structure, and inline pump |
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