CN210087998U - Radial double-end-face mechanical sealing structure with planetary gear - Google Patents
Radial double-end-face mechanical sealing structure with planetary gear Download PDFInfo
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- CN210087998U CN210087998U CN201920823059.9U CN201920823059U CN210087998U CN 210087998 U CN210087998 U CN 210087998U CN 201920823059 U CN201920823059 U CN 201920823059U CN 210087998 U CN210087998 U CN 210087998U
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- planet carrier
- planetary gear
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Abstract
The utility model provides a radial two terminal surface mechanical seal structure with planetary gear can reduce the linear velocity between the seal ring, makes contact mechanical seal go on can being applicable to the rotating machinery of higher pressure, rotational speed and bigger footpath. It comprises a dynamic ring, a static ring and a planetary gear pair; the planetary gear pair comprises a sun gear, a planet gear, a gear ring and a planet carrier; the sun gear is fixed on the rotating shaft, the gear ring is fixedly arranged and coaxially sleeved on the sun gear, the planet gear is meshed between the sun gear and the gear ring, and the rotating shaft of the planet gear is fixed on the planet carrier; the planet gear rotates along with the sun gear and simultaneously drives the planet carrier to rotate in the same direction and in a speed reduction manner; and two sides of the planet carrier are respectively contacted with the movable ring and the static ring to form two sealing end faces.
Description
Technical Field
The utility model relates to a mechanical seal structure specifically is a radial two terminal surface mechanical seal structure with planetary gear.
Background
Traditional contact mechanical seal relies on laminating each other and relative gliding sealing ring to realize rotating machinery's sealed requirement, and the rotating ring is installed and is rotated along with the axle on the rotation axis, and quiet ring irrotational, the rotational speed of axle is the relative rotational speed of rotating ring and quiet ring promptly. Because the sealing ring of the contact type mechanical seal is a pair of friction pairs, the linear speed of the movable ring and the static ring at the friction action is a very critical parameter for the design and selection of the contact type mechanical seal. For some high-pressure, high-speed and large-shaft-diameter rotating machines, the conventional contact type mechanical sealing structure cannot meet the use requirement due to overlarge friction linear velocity, and other sealing forms such as dry gas sealing and the like which are more expensive, complicated and have larger leakage amount can be selected.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a radial two terminal surfaces mechanical seal structure with planetary gear can reduce the linear velocity between the seal ring, makes contact mechanical seal go on can being applicable to the rotating machinery of higher pressure, rotational speed and bigger footpath.
The utility model discloses a realize through following technical scheme:
a radial double-end-face mechanical sealing structure with a planetary gear comprises a moving ring, a stationary ring and a planetary gear pair;
the planetary gear pair comprises a sun gear, a planet gear, a gear ring and a planet carrier; the sun gear is fixed on the rotating shaft, the gear ring is fixedly arranged and coaxially sleeved on the sun gear, the planet gear is meshed between the sun gear and the gear ring, and the rotating shaft of the planet gear is fixed on the planet carrier; the planet gear rotates along with the sun gear and simultaneously drives the planet carrier to rotate in the same direction and in a speed reduction manner;
and two sides of the planet carrier are respectively contacted with the movable ring and the static ring to form two sealing end faces.
Preferably, the stationary ring is fixedly arranged on the gear ring.
Preferably, the rotating ring is connected with the shaft for rotation.
Preferably, the sealing device further comprises a pressing device for pressing the two sealing end faces.
Furthermore, the pressing device comprises a spring seat, a spring and a push ring; the push ring is sleeved on the shaft, the spring seat is fixed on the shaft, two ends of the spring in a compressed state are respectively connected with the spring seat and the push ring, and the movable ring is fixedly arranged on the push ring.
Preferably, the planet carrier is of an annular structure, and the annular surfaces of the planet carrier, which are contacted with the moving ring and the static ring respectively, are sealed and complete.
Preferably, the thickness of the sealing contact end of the movable ring and the stationary ring is smaller than that of the fixed end.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses radial two terminal surface mechanical seal structure with planetary gear utilizes planetary gear's speed reduction principle, between conventional contact mechanical seal rotating ring and quiet ring, the driven ring that the planet carrier constitutes has been increased, two seal end faces have been formed, greatly reduced seal end face's linear velocity, realized being used for contact mechanical seal structure higher pressure, rotational speed and the rotating machinery of bigger footpath, avoid selecting expensive, complicated and let out other sealed forms that leakage volume is big, the comprehensive economic benefits of equipment has been improved.
Drawings
Fig. 1 is a schematic view of a half-section of a structure according to an embodiment of the present invention.
Wherein, 1 is a sun gear, 2 is a planet wheel, 3 is a gear ring, 4 is a planet carrier, 5 is a moving ring, 6 is a static ring, 7 is a push ring, 8 is a spring, 9 is a spring seat, 10 is a shaft, and 11 is a mechanical shell.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
Referring to fig. 1, the radial double-end-face mechanical seal structure with planetary gear comprises a sun gear 1, a planetary gear 2, a gear ring 3, a planet carrier 4, a movable ring 5, a stationary ring 6, a shaft, a spring seat, a spring, a push ring and other conventional structures.
The radial double-end-face mechanical sealing structure with the planetary gear is provided with a planetary gear pair comprising a sun gear 1, a planetary gear 2, a gear ring 3 and a planet carrier 4, wherein the sun gear 1 is connected with a shaft 10 and rotates together, the gear ring 3 is fixed with a mechanical shell 11, the planetary gear 2 rotates along with the sun gear 1 and simultaneously drives the planet carrier 4 to rotate in the same direction and reduce the speed, and the planet carrier 4 is used as a driven ring; the movable ring 5 is driven by the push ring 7 to rotate along with the shaft.
Therefore, two sealing end faces are arranged in the radial direction of the shaft, one sealing end face is formed by the movable ring 5 and the planet carrier 4, and the other sealing end face is formed by the planet carrier 4 and the static ring 6.
The push ring 7 can be moved in the axial direction to transmit the pressing force of the spring 8 to the two sealing end faces.
The utility model discloses a concrete working process does:
the sun gear 1 drives the planet wheel 2 to rotate along with the rotation of the shaft, the rotating shaft of the planet wheel 2 is fixed on the planet carrier 4, the rotation of the planet wheel 2 drives the planet carrier 4 to rotate along with the sun gear 1 in the same direction and in a speed reduction manner, the rotating ring 5 is fixed on the shaft 10 and rotates along with the shaft, the static ring 6 is fixed and does not rotate, because the planet carrier 4 is used as a driven ring, the planet carrier 4 and the rotating ring 5 and the static ring 6 both rotate relatively, the speed of the relative rotation is smaller than the rotating speed of the shaft 10, the pressing force of the spring 8 compresses the rotating ring 5, two sealing end faces formed by the planet carrier 4 and the static ring 6, the. The two sealing end faces and the sealing of the contact ring surface of the planet carrier 4 form an integral sealing structure inside and outside.
The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A radial double-end-face mechanical sealing structure with a planetary gear is characterized by comprising a movable ring (5), a stationary ring (6) and a planetary gear pair;
the planetary gear pair comprises a sun gear (1), a planet gear (2), a gear ring (3) and a planet carrier (4); the sun gear (1) is fixed on the rotating shaft (10), the gear ring (3) is fixedly arranged and coaxially sleeved on the sun gear (1), the planet gear (2) is meshed between the sun gear (1) and the gear ring (3), and the rotating shaft of the planet gear (2) is fixed on the planet carrier (4); the planet gear (2) rotates along with the sun gear (1) and simultaneously drives the planet carrier (4) to rotate in the same direction and reduce speed;
two sides of the planet carrier (4) are respectively contacted with the movable ring (5) and the static ring (6) to form two sealing end faces.
2. A radial double-ended mechanical seal with a planetary gear according to claim 1, characterized in that the stationary ring (6) is fixedly arranged on the ring gear (3).
3. A radial double-ended mechanical seal with a planetary gear according to claim 1, characterized in that the rotating ring (5) is connected to rotate with the shaft (10).
4. A radial double-ended mechanical seal with a planetary gear according to claim 1, further comprising a pressing means for pressing both seal ends.
5. A radial double-ended mechanical seal with a planetary gear according to claim 4, characterized in that the hold-down device comprises a spring seat (9), a spring (8) and a push ring (7); the push ring (7) is sleeved on the shaft (10), the spring seat (9) is fixed on the shaft (10), two ends of the spring (8) in a compressed state are respectively connected with the spring seat (9) and the push ring (7), and the movable ring (5) is fixedly arranged on the push ring (7).
6. A radial double-end-face mechanical seal structure with planetary gears as claimed in claim 1, characterized in that the planet carrier (4) is of annular structure, and the ring faces of the movable ring (5) and the static ring (6) which are contacted are sealed and complete.
7. A radial double-ended mechanical seal structure with planetary gears according to claim 1, characterized in that the thickness of the seal contact end of the rotating ring (5) and the static ring (6) is smaller than the thickness of the fixed end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920823059.9U CN210087998U (en) | 2019-05-31 | 2019-05-31 | Radial double-end-face mechanical sealing structure with planetary gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920823059.9U CN210087998U (en) | 2019-05-31 | 2019-05-31 | Radial double-end-face mechanical sealing structure with planetary gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210087998U true CN210087998U (en) | 2020-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920823059.9U Active CN210087998U (en) | 2019-05-31 | 2019-05-31 | Radial double-end-face mechanical sealing structure with planetary gear |
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| CN (1) | CN210087998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118261A (en) * | 2019-05-31 | 2019-08-13 | 西安热工研究院有限公司 | One kind having planetary gear radial double mechanical seal structure |
-
2019
- 2019-05-31 CN CN201920823059.9U patent/CN210087998U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118261A (en) * | 2019-05-31 | 2019-08-13 | 西安热工研究院有限公司 | One kind having planetary gear radial double mechanical seal structure |
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