CN218494194U - Bidirectional spiral high-speed mechanical sealing device - Google Patents
Bidirectional spiral high-speed mechanical sealing device Download PDFInfo
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- CN218494194U CN218494194U CN202221480541.5U CN202221480541U CN218494194U CN 218494194 U CN218494194 U CN 218494194U CN 202221480541 U CN202221480541 U CN 202221480541U CN 218494194 U CN218494194 U CN 218494194U
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- gland
- labyrinth
- inner sleeve
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Abstract
A bidirectional screw high-speed mechanical sealing device is characterized in that an O-shaped ring for a shaft is arranged at the inner diameter of a labyrinth inner sleeve, a gland O-shaped ring is arranged at the spigot of a gland, the gland is in interference fit connection with a gland bush, unidirectional spiral grooves are respectively arranged on the gland and the labyrinth inner sleeve, a labyrinth groove is arranged on the gland bush, and the labyrinth inner sleeve is arranged at the gland bush. The utility model discloses the two-way helicla flute that utilizes the one-way spiral flute profile of formation between labyrinth endotheca and the gland to turn back the medium intracavity with fluid medium, make the medium can not reveal, and partial residual medium can be by the labyrinth groove separation on the gland bush simultaneously, avoids mechanical seal device's friction pair its wearing and tearing under high rotational speed's operating condition too fast and lead to revealing, and the cost is reduced has shortened process time. The utility model discloses simple structure, the space is compact, and the on-the-spot installation of being convenient for need not anxious vice damage of friction, can adapt to the user demand of more little installation space's pump.
Description
Technical Field
The utility model relates to a mechanical seal device especially relates to a high-speed mechanical seal device of two-way spiral.
Background
At present, high-speed pump equipment is arranged in the petroleum industry and the petrochemical industry, and the equipment has compact structure and small occupied area and is used for occasions with small flow and high lift. Under the conditions, the rotating speed of the pump shaft is increased by the equipment through the gearbox, the rotating speed is 8000r/min and 20000r/min for a few times, the general conventional mechanical seal cannot meet the use requirement easily, the mechanical seal leakage problem is easy to occur because the influence of the rotating speed of the equipment has severe requirements on the material of the seal end face and the mechanical seal structure, so that the medium is exposed, the service life of the bearing is greatly influenced, the normal operation of the whole equipment is further influenced, and the high-rotating-speed mechanical seal service life is required at the present stage. Under the operating condition of high rotational speed, the vice wearing and tearing of friction of mechanical seal terminal surface can aggravate, lead to mechanical seal live time to shorten, can make the cost increase through improving the mechanical seal material, if the change through mechanical seal structure itself also can't guarantee mechanical seal's life, lead to the number of times that the pump was torn open in the scene to increase, also can make user's maintenance cost increase, influence user's normal production.
Disclosure of Invention
High to current high-speed pump rotational speed, contact wet seal life is short and need the long-time moving demand of equipment, the utility model provides an adopt the vice structure of two-way spiral zero friction, avoid mechanical seal to lose efficacy because the quick problem of end face wear caused mechanical seal, reduce user's purchase and cost of maintenance, guarantee the high-speed mechanical seal device of two-way spiral of the continuous normal operating of equipment.
The specific technical measures for solving the problems are as follows:
a bidirectional spiral high-speed mechanical sealing device is characterized in that: an O-shaped ring 4 for a shaft is arranged at the inner diameter of the labyrinth inner sleeve 2, a gland O-shaped ring 5 is arranged at the seam allowance of the gland 1, the gland 1 is in interference fit connection with the gland bush 3, the gland 1 and the labyrinth inner sleeve 2 are respectively provided with a one-way spiral groove 6, the gland bush 3 is provided with a labyrinth groove 7, and the labyrinth inner sleeve 2 is arranged at the gland bush 3.
The utility model has the advantages that: the utility model discloses changed conventional mechanical seal device and relied on sound ring to form the sealed structure of liquid film, its main advantage has: firstly, the service time of the mechanical seal can be ensured, the rapid abrasion of a friction pair of the conventional mechanical seal under the high-rotation-speed operating condition is the main cause of leakage, and the fluid medium is reversely guided back to a medium cavity by utilizing the bidirectional spiral groove of the labyrinth inner sleeve and the gland, so that the sealing effect can be well realized, the cost is reduced, and the processing time is shortened; and secondly, the economic cost of maintaining equipment on site by a user is saved, normal production on site can be influenced by frequent replacement of mechanical seal, the safety of the equipment and personnel can be threatened, and meanwhile, great help is provided for shortening the maintenance time of workshop workers. The utility model discloses simple structure, the on-the-spot installation of being convenient for need not anxious vice damage of friction, and the space is compact, can adapt to the user demand of more little installation space's pump, and mounting dimension accords with DIN24960 standard, can be used to the high-speed equipment under the high rotational speed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a schematic structural diagram of the middle gland of the present invention;
FIG. 4 is a left side view of FIG. 3;
fig. 5 is a schematic structural view of the middle gland bush of the present invention;
fig. 6 is a schematic structural view of the inner sleeve of the labyrinth in the present invention.
In the figure: 1 is a gland, 2 is a labyrinth inner sleeve, 3 is a gland bush, 4 is an axial O-shaped ring, 5 is a gland O-shaped ring, 6 is a one-way spiral groove, and 7 is a labyrinth groove.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
A two-way spiral high-speed mechanical sealing device is disclosed, as shown in figures 1 to 6, an O-shaped ring 4 for a shaft is arranged at the inner diameter of a labyrinth inner sleeve 2 to prevent a medium from leaking between a pump shaft and the labyrinth inner sleeve 2, a gland O-shaped ring 5 is arranged at a spigot of a gland 1 to prevent the medium from leaking between a pump body and the gland 1, and the gland 1 is in interference fit connection with a gland bush 3 in size to ensure relative rest. The gland 1 and the labyrinth inner sleeve 2 are respectively provided with a one-way spiral groove 6, the gland bush 3 is provided with a labyrinth groove 7, the labyrinth inner sleeve 2 is arranged at the gland bush 3, the components are integrated together, and the sealing medium leakage effect is realized when the labyrinth inner sleeve is integrally arranged on equipment. The utility model discloses a tight labyrinth endotheca 2 of position sleeve clamp on the express pump of equipment realizes the transmission, utilizes the two-way helicla flute that the one-way helicla flute 6 between labyrinth endotheca 2 and the gland 1 formed to return the medium intracavity with fluid medium reversal, makes the medium can not reveal, and the remaining medium of part can be by the labyrinth groove separation on the gland bush 3 simultaneously.
The utility model discloses a structure space is compact, can adapt to the user demand of more little installation space's pump, and mounting dimension accords with DIN24960 standard, can be used to the high-speed equipment under the high rotational speed.
Claims (1)
1. A bidirectional spiral high-speed mechanical sealing device is characterized in that: an O-shaped ring (4) for a shaft is arranged at the inner diameter of the labyrinth inner sleeve (2), a gland O-shaped ring (5) is arranged at the seam allowance of the gland (1), the gland (1) is in interference connection with the gland bush (3), a one-way spiral groove (6) is respectively arranged on the gland (1) and the labyrinth inner sleeve (2), a labyrinth groove (7) is arranged on the gland bush (3), and the labyrinth inner sleeve (2) is arranged at the gland bush (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221480541.5U CN218494194U (en) | 2022-06-14 | 2022-06-14 | Bidirectional spiral high-speed mechanical sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221480541.5U CN218494194U (en) | 2022-06-14 | 2022-06-14 | Bidirectional spiral high-speed mechanical sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218494194U true CN218494194U (en) | 2023-02-17 |
Family
ID=85182454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221480541.5U Active CN218494194U (en) | 2022-06-14 | 2022-06-14 | Bidirectional spiral high-speed mechanical sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218494194U (en) |
-
2022
- 2022-06-14 CN CN202221480541.5U patent/CN218494194U/en active Active
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