CN115653933A - Mechanical sealing device for emulsion pump - Google Patents
Mechanical sealing device for emulsion pump Download PDFInfo
- Publication number
- CN115653933A CN115653933A CN202211418558.2A CN202211418558A CN115653933A CN 115653933 A CN115653933 A CN 115653933A CN 202211418558 A CN202211418558 A CN 202211418558A CN 115653933 A CN115653933 A CN 115653933A
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- ring
- medium side
- static ring
- medium
- gland
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Abstract
The invention relates to a mechanical sealing device of an emulsion pump, which consists of a medium side mechanical seal and an atmosphere side mechanical seal, and is characterized in that a water seal device is arranged at the end opening at the inner side of a medium side gland shaft hole to seal the end opening at the inner side of the medium side gland shaft hole so as to form an isolation cavity between the medium side gland shaft hole and a shaft sleeve; the outer spiral dynamic pressure groove is formed in 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, so that leakage of water seal liquid to medium side sealing is improved, the isolation cavity is filled with the water seal liquid, a latex medium is prevented from being condensed in a space between the inner circle of the medium side static ring and the shaft sleeve, the medium side static ring is adhered, the medium side static ring loses axial compensation capacity, the operation safety and reliability of the medium side mechanical sealing are fully guaranteed, and the service life is prolonged.
Description
Technical Field
The invention 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-face 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 respectively leaks to the medium side sealing and the atmosphere side sealing along the sealing end, and the leakage amount is less than or equal to 5ml/h.
In the prior art, the moving ring is made of reaction sintering silicon carbide (SIC), the medium side static ring and the atmosphere side static ring are made of resin-impregnated graphite, and in use, particularly in a shutdown state, the emulsion medium is easy to condense in a space between an inner circle of the medium side static ring and a shaft sleeve, so that the medium side static ring is easy to be bonded, the medium side static ring loses axial compensation capacity, the medium side mechanical seal is caused to lose effectiveness, the service life is shortened, and the average service life is 3 months.
Disclosure of Invention
The invention aims to improve the defects of the prior art, and provides a mechanical sealing device for an emulsion pump, which overcomes the defects of the prior art, meets the sealing requirements of the emulsion pump, and prolongs the service life of the mechanical seal of the emulsion pump.
The invention relates to a mechanical sealing device of an emulsion pump, which comprises a shaft sleeve, a rotating ring sealing ring, a rotating ring anti-rotating pin, a medium side static ring compensation spring, a medium side static ring sliding sealing ring, a medium side static ring anti-rotating 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-rotating pin, an atmosphere side gland and a shaft sleeve axial positioning block component, wherein the rotating ring is arranged on the shaft sleeve; the rotating ring, the rotating ring sealing ring, the rotating 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 seal ring, the medium side static ring rotation prevention pin and the medium side pressure cover are installed in a matched mode; 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 installed in a matched mode; the medium side stationary ring and the moving ring left side end face are matched to form medium side mechanical seal, the atmosphere side stationary ring and the moving ring right side end face are matched to form atmosphere side mechanical seal, an 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 seal device is arranged at the port of the inner side end of the shaft hole of the medium side gland to seal the port of the inner side of the shaft hole of the medium side gland to form an isolation cavity between the shaft hole of the medium side gland and the shaft sleeve; an external spiral dynamic pressure groove is arranged on 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 so as to improve the leakage rate of the water seal liquid to the medium side seal to reach 0.5L-1.5L/h, and the isolation cavity A between the shaft hole of the medium side gland and the shaft sleeve is filled with the water seal liquid.
The invention has simple structure, is simple and convenient to manufacture and use, and is particularly suitable for the latex pump with the working conditions 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 medium side static ring sealing device has the advantages that the medium side latex can be prevented from entering the isolation cavity between the medium side gland shaft hole and the shaft sleeve, the latex medium is prevented from being condensed 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 capacity, the operation safety and reliability of the medium side mechanical seal are fully guaranteed, the service life is greatly prolonged, and the sealing service life is longer than or equal to 25000h.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
FIG. 2 is a schematic diagram showing the shape of a mechanical seal friction end face with a dynamic pressure groove.
Detailed Description
The mechanical sealing device of the emulsion pump comprises a shaft sleeve 1, a moving ring 2, a moving ring sealing ring 21, a moving 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 component 5; the rotating ring 2, the rotating ring sealing ring 21 and the rotating ring anti-rotation pin 22 are matched with the shaft sleeve 1; the medium side static ring 3, the medium side static ring compensation spring 31, the medium side static ring sliding seal ring 32, the medium side static ring rotation prevention pin 33 and the medium side gland 34 are installed in a matched mode; the atmosphere side static ring 4, the atmosphere side static ring compensation spring 41, the atmosphere side static ring sliding seal ring 42, the atmosphere side static ring anti-rotation pin 43 and the atmosphere side pressure cover 44 are installed in a matched mode; the medium side stationary ring 3 and the moving ring 2 left side end face cooperate to form medium side mechanical seal, the atmosphere side stationary ring 3 and the moving ring 2 right side end face cooperate to form atmosphere side mechanical seal, the atmosphere side gland 44 is butted with the medium side gland 34, and the medium side gland 34 is provided with a water seal liquid inlet hole 341, which is characterized in that:
a water seal device 6 is arranged at the port of the inner side of the shaft hole of the medium side gland 34 to seal the port of the inner side of the shaft hole of the medium side gland 34 to form an isolation cavity A between the inner hole of the medium side gland 34 and the shaft sleeve 1; an external spiral dynamic pressure groove is arranged on 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 so as to improve the leakage amount of the water seal liquid sealed at the medium end to the medium side to reach 0.5L-1.5L/h.
The water seal 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 seal gland 62; it has simple structure and safe and convenient use.
The lip type water seal 61 is a double-layer lip type water seal.
Claims (3)
1. The mechanical sealing device of the latex pump comprises a shaft sleeve, a moving ring sealing ring, a moving ring anti-rotating pin, a medium side static ring compensation spring, a medium side static ring sliding sealing ring, a medium side static ring anti-rotating 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-rotating pin, an atmosphere side gland and a shaft sleeve axial positioning block component; the rotating ring, the rotating ring sealing ring, the rotating ring anti-rotation pin and the shaft sleeve are arranged in a matched manner; the medium side static ring, the medium side static ring compensation spring, the medium side static ring sliding seal ring, the medium side static ring anti-rotation pin and the medium side pressure cover are installed in a matched mode; 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 installed in a matched mode; the medium side stationary ring and the moving ring left side end face are matched to form medium side mechanical seal, the atmosphere side stationary ring and the moving ring right side end face are matched to form atmosphere side mechanical seal, an 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 seal device is arranged at the port of the inner side end of the shaft hole of the medium side gland to seal the port of the inner side of the shaft hole of the medium side gland to form an isolation cavity A between the shaft hole of the medium side gland 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 to improve the leakage rate of water seal liquid to the medium side seal to reach 0.5L-1.5L/h, so that the isolation cavity between the shaft hole of the medium side gland and the shaft sleeve is filled with the water seal liquid.
2. The mechanical seal of an emulsion pump of claim 1, wherein:
the water seal device is a lip type water seal and is fixedly arranged at the port of the shaft hole of the medium side gland through a water seal gland.
3. The mechanical seal of an emulsion pump of claim 1, wherein:
the lip type water seal is a double-layer lip type water seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211418558.2A CN115653933A (en) | 2022-11-14 | 2022-11-14 | Mechanical sealing device for emulsion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211418558.2A CN115653933A (en) | 2022-11-14 | 2022-11-14 | Mechanical sealing device for emulsion pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115653933A true CN115653933A (en) | 2023-01-31 |
Family
ID=85020452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211418558.2A Pending CN115653933A (en) | 2022-11-14 | 2022-11-14 | Mechanical sealing device for emulsion pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115653933A (en) |
-
2022
- 2022-11-14 CN CN202211418558.2A patent/CN115653933A/en active Pending
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