CN218991952U - Mechanical sealing device for emulsion pump - Google Patents
Mechanical sealing device for emulsion pump Download PDFInfo
- Publication number
- CN218991952U CN218991952U CN202223017471.2U CN202223017471U CN218991952U CN 218991952 U CN218991952 U CN 218991952U CN 202223017471 U CN202223017471 U CN 202223017471U CN 218991952 U CN218991952 U CN 218991952U
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- medium side
- ring
- static ring
- medium
- atmosphere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model relates to a mechanical sealing device of an emulsion pump, which consists of a double-end-face mechanical seal consisting of a medium side mechanical seal and an atmosphere side mechanical seal, and is characterized in that a water sealing device is arranged at an inner port of a shaft hole of a medium side gland, and the inner port of the shaft hole of the medium side gland is sealed to form an isolation cavity between the shaft hole of the medium side gland and a shaft sleeve; the outer spiral dynamic pressure groove is formed on the friction end surface of the medium side static ring or the dynamic ring friction end surface matched with the medium side static ring so as to improve the leakage amount of the water seal liquid to the medium side seal, the isolation cavity is filled with the water seal liquid, latex media are prevented from being coagulated in the space between the inner circle of the medium side static ring and the shaft sleeve, the medium side static ring is bonded, the medium side static ring loses the axial compensation capability, the safe and reliable operation of the medium side mechanical seal is fully ensured, and the service life is prolonged.
Description
Technical Field
The utility model relates to a mechanical sealing device, in particular to a mechanical sealing device of a latex pump.
Background
The mechanical sealing device of the latex pump shaft in the prior art adopts double-end mechanical sealing, the mechanical sealing is static multi-spring compensation mechanical sealing, a sealing auxiliary system is PLAN54, a medium side is a pump for conveying medium latex, sealing liquid is injected into a sealing liquid side, the pressure of the sealing liquid is 0.1-0.2MPa higher than the pressure of the medium side, when the mechanical sealing works, the sealing liquid in the sealing liquid side is respectively sealed to the medium side and the atmosphere side along a sealing end, and the leakage amount is less than or equal to 5ml/h.
In the prior art, the movable ring is made of reaction sintering silicon carbide (SIC), the medium side stationary ring and the atmosphere side stationary ring are made of resin-impregnated graphite, and in use, particularly in a shutdown state, emulsion media are easy to coagulate in a space between the inner circle of the medium side stationary ring and the shaft sleeve, so that the medium side stationary ring is easy to be bonded, the medium side stationary ring loses axial compensation capability, mechanical sealing failure of the medium side is caused, the service life is shortened, and the average service life is 3 months.
Disclosure of Invention
The utility model aims to improve the defects of the prior art and provides a mechanical sealing device for a latex pump, so that the defects of the prior art are overcome, the sealing requirement of the latex pump is met, and the service life of the mechanical sealing of the latex pump is prolonged.
The mechanical sealing device of the emulsion pump comprises a shaft sleeve, a movable ring sealing ring, a movable ring anti-rotation pin, a medium side static ring compensation spring, a medium side static ring sliding sealing ring, a medium side static ring anti-rotation pin, a medium side gland, an atmosphere side static ring compensation spring, an atmosphere side static ring sliding sealing ring, an atmosphere side static ring anti-rotation pin, an atmosphere side gland and a shaft sleeve axial positioning block assembly; the movable ring, the movable ring sealing ring, the movable ring anti-rotation pin and the shaft sleeve are mutually matched and installed; the medium side static ring, the medium side static ring compensation spring, the medium side static ring sliding sealing ring, the medium side static ring anti-rotation pin and the medium side pressure cover are mutually matched and installed; the atmosphere side static ring, the atmosphere side static ring compensation spring, the atmosphere side static ring sliding sealing ring, the atmosphere side static ring anti-rotation pin and the atmosphere side pressure cover are mutually matched and installed; the medium side stationary ring and the moving ring left end face are matched to form a medium side mechanical seal, the atmosphere side stationary ring and the moving ring right end face are matched to form an atmosphere side mechanical seal, the atmosphere side gland is in butt joint with the medium side gland, and a water seal liquid inlet hole is formed in the medium side gland, and the device is characterized in that:
a water sealing device is arranged at the inner side port of the shaft hole of the medium side pressure cover so as to seal the inner side port of the shaft hole of the medium side pressure cover and form an isolation cavity between the shaft hole of the medium side pressure cover and the shaft sleeve; the friction end face of the medium side static ring or the friction end face of the movable ring matched with the medium side static ring is provided with an external spiral dynamic pressure groove so as to improve the leakage amount of the water seal liquid to the medium side seal to 0.5L-1.5L/h, and the isolation cavity A between the shaft hole of the medium side pressure cover and the shaft sleeve is filled with the water seal liquid.
The utility model has simple structure, is simple and convenient to manufacture and use, and is particularly suitable for latex pumps with the working condition that the pressure P is less than or equal to 4.0Mpa, the temperature T is less than or equal to 176 ℃ and the rotating speed is less than or equal to 5000 rpm; the emulsion on the medium side can be prevented from entering into the isolation cavity between the shaft hole of the medium side pressure cover and the shaft sleeve, emulsion medium is prevented from being coagulated in the space between the inner circle of the static ring on the medium side and the shaft sleeve, so that the static ring on the medium side is bonded, the static ring on the medium side loses the axial compensation capability, the safe and reliable operation of mechanical seal on the medium side is fully ensured, the service life is greatly prolonged, and the sealing service life is more than or equal to 25000h.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model.
Fig. 2 is a schematic diagram of a dynamic pressure groove shape formed on a friction end surface of a mechanical seal.
Detailed Description
The mechanical sealing device of the emulsion pump comprises a shaft sleeve 1, a movable ring 2, a movable ring sealing ring 21, a movable ring anti-rotation pin 22, a medium side static ring 3, a medium side static ring compensation spring 31, a medium side static ring sliding sealing ring 32, a medium side static ring anti-rotation pin 33, a medium side gland 34, an atmosphere side static ring 4, an atmosphere side static ring compensation spring 41, an atmosphere side static ring sliding sealing ring 42, an atmosphere side static ring anti-rotation pin 43, an atmosphere side pressure cover 44 and a shaft sleeve axial positioning block assembly 5; the movable ring 2, the movable ring sealing ring 21, the movable ring anti-rotation pin 22 and the shaft sleeve 1 are mutually matched and installed; the medium side static ring 3, the medium side static ring compensation spring 31, the medium side static ring sliding sealing ring 32, the medium side static ring anti-rotation pin 33 and the medium side gland 34 are mutually matched and installed; the atmosphere side static ring 4, the atmosphere side static ring compensation spring 41, the atmosphere side static ring sliding sealing ring 42, the atmosphere side static ring anti-rotation pin 43 and the atmosphere side pressure cover 44 are mutually matched and installed; the medium side stationary ring 3 and the left end face of the moving ring 2 are matched to form a medium side mechanical seal, the atmosphere side stationary ring 3 and the right end face of the moving ring 2 are matched to form an atmosphere side mechanical seal, the atmosphere side pressure cover 44 is in butt joint with the medium side pressure cover 34, and the medium side pressure cover 34 is provided with a water seal liquid inlet hole 341, which is characterized in that:
a water sealing device 6 is arranged at the inner side port of the shaft hole of the medium side gland 34 to seal the inner side port of the shaft hole of the medium side gland 34, so as to form an isolation cavity A between the inner hole of the medium side gland 34 and the shaft sleeve 1; the friction end surface of the medium side static ring 3 or the friction end surface of the movable ring 2 matched with the medium side static ring 3 is provided with an external spiral dynamic pressure groove so as to improve the leakage amount of water sealing liquid sealed at the medium end to the medium side to 0.5L-1.5L/h.
The water sealing device 6 is a lip type water seal 61 and is fixedly arranged at the port of the shaft hole of the medium side gland 34 through a water sealing gland 62; the structure is simple, and the safety and the convenience in use are realized.
The lip type water seal 61 is a double-layer lip type water seal.
Claims (3)
1. The mechanical sealing device of the emulsion pump comprises a shaft sleeve, a movable ring sealing ring, a movable ring anti-rotation pin, a medium side static ring compensation spring, a medium side static ring sliding sealing ring, a medium side static ring anti-rotation pin, a medium side gland, an atmosphere side static ring compensation spring, an atmosphere side static ring sliding sealing ring, an atmosphere side static ring anti-rotation pin, an atmosphere side gland and a shaft sleeve axial positioning block assembly; the movable ring, the movable ring sealing ring, the movable ring anti-rotation pin and the shaft sleeve are mutually matched and installed; the medium side static ring, the medium side static ring compensation spring, the medium side static ring sliding sealing ring, the medium side static ring anti-rotation pin and the medium side pressure cover are mutually matched and installed; the atmosphere side static ring, the atmosphere side static ring compensation spring, the atmosphere side static ring sliding sealing ring, the atmosphere side static ring anti-rotation pin and the atmosphere side pressure cover are mutually matched and installed; the medium side stationary ring and the moving ring left end face are matched to form a medium side mechanical seal, the atmosphere side stationary ring and the moving ring right end face are matched to form an atmosphere side mechanical seal, the atmosphere side gland is in butt joint with the medium side gland, and a water seal liquid inlet hole is formed in the medium side gland, and the device is characterized in that:
a water sealing device is arranged at the inner side port of the shaft hole of the medium side pressure cover so as to seal the inner side port of the shaft hole of the medium side pressure cover and form an isolation cavity A between the shaft hole of the medium side pressure cover and the shaft sleeve; the friction end face of the medium side static ring or the friction end face of the movable ring matched with the medium side static ring is provided with an external spiral dynamic pressure groove so as to improve the leakage amount of the water seal liquid to the medium side seal to 0.5L-1.5L/h, and the isolation cavity between the shaft hole of the medium side pressure cover and the shaft sleeve is filled with the water seal liquid.
2. The mechanical seal device of a latex pump of claim 1, wherein:
the water sealing device is a lip type water seal and is fixedly arranged at the end opening of the shaft hole of the medium side pressure cover through a water sealing gland.
3. The mechanical seal device of a latex pump of claim 2, wherein:
the lip type water seal is arranged in a double-layer lip type water seal mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223017471.2U CN218991952U (en) | 2022-11-14 | 2022-11-14 | Mechanical sealing device for emulsion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223017471.2U CN218991952U (en) | 2022-11-14 | 2022-11-14 | Mechanical sealing device for emulsion pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218991952U true CN218991952U (en) | 2023-05-09 |
Family
ID=86225642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223017471.2U Active CN218991952U (en) | 2022-11-14 | 2022-11-14 | Mechanical sealing device for emulsion pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218991952U (en) |
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2022
- 2022-11-14 CN CN202223017471.2U patent/CN218991952U/en active Active
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