CN115649409A - Moving ring structure of shock-resistant stern shaft sealing device - Google Patents
Moving ring structure of shock-resistant stern shaft sealing device Download PDFInfo
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- CN115649409A CN115649409A CN202211404308.3A CN202211404308A CN115649409A CN 115649409 A CN115649409 A CN 115649409A CN 202211404308 A CN202211404308 A CN 202211404308A CN 115649409 A CN115649409 A CN 115649409A
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- 238000007789 sealing Methods 0.000 title claims abstract description 50
- 230000035939 shock Effects 0.000 title description 2
- 230000003068 static effect Effects 0.000 claims description 25
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000008901 benefit Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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Abstract
The invention discloses a dynamic ring structure of an impact-resistant stern shaft sealing device, which adopts the technical scheme that the dynamic ring structure comprises: the movable ring comprises two movable ring bodies which are spliced and connected; the movable ring body comprises a connecting bolt, the connecting bolt is arranged on the half surface of the movable ring body, and the axial direction of the connecting bolt is vertical to the joint surface of the movable ring body; the movable ring body comprises a first cylindrical pin and a second cylindrical pin, a pin hole is formed in the half surface of the movable ring body, the first cylindrical pin is inserted into the pin hole, and the second cylindrical pin is inserted into the first cylindrical pin.
Description
Technical Field
The invention relates to the field of screw shaft sealing device parts, in particular to a dynamic ring structure of an impact-resistant screw shaft sealing device.
Background
The stern shaft sealing device is an important component of a ship power propulsion system, is arranged at the position where a stern shaft penetrates into a stern shaft tube, plays a role in water sealing at the stern shaft tube and prevents seawater in the stern shaft tube from entering the cabin. The stern shaft sealing device mainly comprises an installation base, a main clamping ring, an omega-shaped elastic compensation body, a bracket, a splash guard, a transmission clamping ring, a moving ring, a static ring, an inflatable seal, a lining ring, an emergency sealing mechanism, a fastener and other parts. The water lubrication end face sealing friction pair consists of a moving ring and a static ring, plays a role in water lubrication friction sealing and belongs to an important working part of the device.
At present, a self-centering stern shaft sealing device with the publication number of CN109973656A comprises a moving ring seat fastened on a stern shaft, wherein a sealing moving ring is fixedly arranged on the moving ring seat, a static ring support is rotatably supported on the moving ring seat and fixedly connected with the sealing seat, a static ring seat is movably sleeved on the sealing seat, a static ring pressure spring is supported between the sealing seat and the static ring seat, and the rotating center lines of the moving ring seat, the static ring support and the static ring seat are positioned on the same straight line; the sealing static ring and the sealing dynamic ring which are fixedly arranged on the static ring seat form an end face sealing pair; the sealing seat is fixedly connected with one end of the flexible connecting pipe, the other end of the flexible connecting pipe is fixedly connected with the stern seat, the sealing air tire seat is fixedly installed at the rear end of the stern seat which is sleeved on the stern shaft in an empty mode, the sealing air tire is embedded in the sealing air tire seat, and the inflating nozzle installed on the sealing air tire seat leads to the tire cavity of the sealing air tire. When the sealing friction pair works, the inner circle ring surface of the movable ring is in direct contact with seawater and is embraced on the shaft and synchronously rotates with the shaft system, and the working surface of the movable ring is attached to the working surface of the static ring to form the sealing friction pair. Considering that the movable ring can generate abrasion in the subsequent using process, the movable ring is convenient to maintain or replace in the aviation, the movable ring is generally designed into a half structure, the movable ring is convenient to replace or maintain in the aviation dismounting process, and the movable ring is not required to be dismounted after the shaft is pulled out.
However, the movable ring used in the existing stern shaft sealing device has the following problems:
the moving ring of the traditional half structure is positioned on a half surface by adopting a taper pin, and two half moving rings are connected into a whole in a screw connection mode. In the connection mode, the length direction of the taper pin is perpendicular to the half surface, and the taper pin is far away from the half surface, so that the positioning effect of the taper pin on the two half movable ring bodies is general, particularly the outer side of the working surface is obvious, and the connection part of the half surface has height difference to generate steps. The flatness of the working surface of the movable ring is not facilitated, and the sealing performance is further influenced.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a moving ring structure of an impact-resistant stern shaft seal device, which has the advantages of good positioning effect on the working surface of the semi-moving ring body, improved flatness and benefit to the sealing performance of the seal device.
The technical purpose of the invention is realized by the following technical scheme:
a rotating ring structure comprising a rotating ring:
the movable ring comprises two movable ring bodies which are spliced and connected;
the movable ring body comprises a connecting bolt, the connecting bolt is arranged on the half surface of the movable ring body, and the axial direction of the connecting bolt is perpendicular to the joint surface of the movable ring body;
the movable ring body comprises a first cylindrical pin and a second cylindrical pin, a pin hole is formed in the half surface of the movable ring body, the first cylindrical pin is inserted into the pin hole, and the second cylindrical pin is inserted into the first cylindrical pin.
Furthermore, the connecting bolts are at least two and are uniformly arranged along the radial direction of the movable ring body.
Furthermore, the length direction of the first cylindrical pin is parallel to the sealing working surface of the movable ring body.
Further, the length of the second cylindrical pin is smaller than that of the first cylindrical pin.
Furthermore, a pin hole is formed in the middle of the first cylindrical pin, the central axis of the pin hole is perpendicular to the length direction of the first cylindrical pin, and the second cylindrical pin is inserted into the pin hole of the first cylindrical pin.
Further, the method is simple and convenient to operate.
An impact-resistant stern shaft sealing device using a moving ring structure comprises a static ring seat, wherein a static ring is arranged in the static ring seat;
the movable ring is arranged on the transmission clamping ring and is positioned between the transmission clamping ring and the static ring.
Furthermore, the transmission clamping ring is in threaded connection with an adjusting screw, and the end part of the adjusting screw is in threaded connection with the movable ring body.
Furthermore, an O-shaped sealing ring is embedded in the inner side surface of the movable ring body.
Furthermore, the number of the O-shaped sealing rings is at least two, and the O-shaped sealing rings are uniformly arranged along the thickness direction of the movable ring.
In conclusion, the invention has the following beneficial effects:
1. the cylindrical pin I is arranged in the pin holes of the half surfaces of the two movable ring bodies, is close to and parallel to the sealing working surface of the movable ring, is close to each other, plays a role in positioning the working surfaces of the two movable ring bodies, adopts screws for connection, firmly connects the movable ring, further ensures the flatness of the movable ring, and further improves the water sealing performance of the device.
2. The two pairs of long straight cylindrical pins of the cylindrical pin play a role in limiting and fixing, and the inner walls of the two pin holes of the cylindrical pin are abutted, so that the first cylindrical pin is prevented from being thrown out in the rotation of the movable ring.
3. An O-shaped sealing ring is arranged on the inner side of the movable ring body, so that the sealing performance of the movable ring is improved.
4. And the adjusting screw is rotated to perform telescopic motion along the thickness direction of the transmission clamping ring, so that the distance between the movable ring and the transmission clamping ring is adjusted.
Drawings
Fig. 1 is a schematic cross-sectional structure of a rotating ring.
Fig. 2 is a view from P in fig. 1.
Fig. 3 is a longitudinal sectional view of the rotating ring.
Fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.
Fig. 5 is a schematic structural view of an impact-resistant stern shaft seal.
In the figure, 1, a rotating ring; 11. a movable ring body; 12. a connecting bolt; 13. a first cylindrical pin; 14. a second cylindrical pin; 2. a stationary ring seat; 21. a stationary ring; 22. positioning pins; 3. a drive collar; 31. an adjusting screw; 4. and an O-shaped sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
Example 1:
a rotating ring structure is shown in figures 1 and 3 and comprises a rotating ring 1, wherein the rotating ring 1 is circular. The rotating ring 1 comprises two rotating ring bodies 11, the central angle corresponding to the rotating ring bodies 11 is 180 degrees, and the two rotating ring bodies 11 are connected in a detachable connection mode to form the completed rotating ring 1.
Specifically, as shown in fig. 1 and 2, the movable ring body 11 includes a connecting bolt 12, the connecting bolt 12 is disposed on a half surface of the movable ring body 11, and an axial direction of the connecting bolt 12 is perpendicular to a joint surface (i.e., the half surface) of the movable ring body 11, that is, the connecting bolt 12 penetrates through two movable ring bodies 11 to be fixed to form the movable ring 1. The number of the connecting bolts 12 is determined according to the length of the joint surface of the movable ring body 11, in this embodiment, the number of the connecting bolts 12 is two, the two connecting bolts 12 are uniformly arranged along the radial direction of the movable ring body 11, the two movable ring bodies 11 are fastened and connected, and the connection firmness is improved.
Specifically, as shown in fig. 3 and 4, the movable ring body 11 includes a first cylindrical pin 13 and a second cylindrical pin 14, and the length and the diameter of the second cylindrical pin 14 are smaller than those of the first cylindrical pin 13. The joint surface of the movable ring body 11 is opened, and the first cylindrical pin 13 is inserted into the movable ring body 11 and is close to and parallel to the sealing working surface of the movable ring 1 to play a positioning role. The middle part of the first cylindrical pin 13 is provided with a pin hole which is a round hole, the central axis of the pin hole is vertical to the length direction of the first cylindrical pin 13, the second cylindrical pin 14 is inserted into the pin hole of the first cylindrical pin 13, the end part of the second cylindrical pin 14 is abutted against the inner wall of the pin hole of the movable ring body 11, the first cylindrical pin 13 is limited and fixed, and the movable ring 1 is prevented from throwing the second cylindrical pin 14 out in the rotating process.
Example 2:
an impact-resistant stern shaft sealing device using a movable ring 1 structure is shown in figure 5 and comprises a static ring seat 2 and a transmission clamping ring 3.
Specifically, as shown in fig. 5, a circular groove is formed on an end surface of the stationary ring seat 2. The stationary ring 21 is arranged in a groove on the end face of the stationary ring seat 2, the outer edge of the section of the stationary ring 21 is step-shaped, namely the stationary ring 21 forms an inner ring with a small radius and an outer ring with a large radius, and the inner ring of the stationary ring 21 is arranged in the groove of the stationary ring seat 2. A positioning pin 22 is arranged between the stationary ring seat 2 and the stationary ring 21, one end of the positioning pin 22 is inserted into the groove surface of the groove of the stationary ring seat 2, and the other end of the positioning pin 22 is inserted into the inner ring of the stationary ring 21 to fix the stationary ring 21.
Specifically, as shown in fig. 4, the drive snap ring 3 is provided with a rotating ring 1. An adjusting screw 31 is connected to the transmission clamping ring 3 in a threaded mode, a bolt body of the adjusting screw 31 penetrates through the transmission clamping ring 3, and the end portion of the adjusting screw 31 extends out of the transmission clamping ring 3 and is connected with the movable ring 1 in a threaded mode. When the movable ring 1 is adjusted, the worker rotates the adjusting screw 31, the adjusting screw 31 makes telescopic motion, and then the distance between the transmission clamping ring 3 and the movable ring 1 is adjusted.
Specifically, as shown in fig. 5, an O-ring 4 is provided inside the rotating ring 1.
The working principle is as follows:
when the ship works, under the action of the elastic body and water pressure, one side of the movable ring 1 is tightly attached to the static ring 21, the static ring 21 is static, and the movable ring 1 rotates along with the shaft, so that an end face friction sealing pair is formed, and the movable sealing effect is achieved. The other side of the rotating ring 1 is provided with a transmission snap ring 3 which drives the rotating ring 1 to rotate along with the shaft. The inner diameter of the movable ring 1 is embraced on the shaft, and an O-shaped sealing ring 4 is arranged between the movable ring and the shaft for sealing.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A rotating ring structure comprises a rotating ring, and is characterized in that:
the movable ring comprises two movable ring bodies which are spliced and connected;
the movable ring body comprises a connecting bolt, the connecting bolt is arranged on the half surface of the movable ring body, and the axial direction of the connecting bolt is vertical to the joint surface of the movable ring body;
the movable ring body comprises a first cylindrical pin and a second cylindrical pin, a pin hole is formed in the half surface of the movable ring body, the first cylindrical pin is inserted into the pin hole, and the second cylindrical pin is inserted into the first cylindrical pin.
2. A rotating ring structure according to claim 1, wherein: the connecting bolts are at least two and are uniformly arranged along the radial direction of the movable ring body.
3. A moving ring structure as claimed in claim 1, wherein: the length direction of the first cylindrical pin is parallel to the sealing working surface of the movable ring body.
4. A rotating ring structure according to claim 2, wherein: the length of the second cylindrical pin is smaller than that of the first cylindrical pin.
5. A rotating ring structure according to claim 3, wherein: the middle position of the first cylindrical pin is provided with a pin hole, the central axis of the pin hole is vertical to the length direction of the first cylindrical pin, and the second cylindrical pin is inserted into the pin hole of the first cylindrical pin.
6. An impact-resistant stern shaft seal device using the rotating ring structure according to any one of claims 1 to 5, wherein:
the device comprises a static ring seat, wherein a static ring is arranged in the static ring seat;
the movable ring is arranged on the transmission clamping ring and is positioned between the transmission clamping ring and the static ring.
7. An impact resistant stern shaft seal as claimed in claim 6, wherein: and the transmission clamping ring is in threaded connection with an adjusting screw, and the end part of the adjusting screw is in threaded connection with the movable ring body.
8. An impact resistant stern shaft seal as claimed in claim 7, wherein: an O-shaped sealing ring is embedded into the inner side surface of the movable ring body.
9. An impact resistant stern shaft seal as claimed in claim 8, wherein: the number of the O-shaped sealing rings is at least two, and the O-shaped sealing rings are uniformly arranged along the thickness direction of the movable ring.
10. An impact resistant stern shaft seal as claimed in claim 6, wherein: and a positioning pin is arranged between the static ring seat and the static ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404308.3A CN115649409A (en) | 2022-11-10 | 2022-11-10 | Moving ring structure of shock-resistant stern shaft sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211404308.3A CN115649409A (en) | 2022-11-10 | 2022-11-10 | Moving ring structure of shock-resistant stern shaft sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115649409A true CN115649409A (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211404308.3A Pending CN115649409A (en) | 2022-11-10 | 2022-11-10 | Moving ring structure of shock-resistant stern shaft sealing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN115649409A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205978461U (en) * | 2016-08-26 | 2017-02-22 | 昆山福步工业设备有限公司 | Great diameter of axle reation kettle of high temperature prevents changeing U type groove structure |
| CN207796096U (en) * | 2018-01-31 | 2018-08-31 | 长安益阳发电有限公司 | A kind of Combined spiral conveyer sealing device |
| CN110748499A (en) * | 2019-11-21 | 2020-02-04 | 江苏华青流体科技有限公司 | Pump sealing device for water jet propulsion unit |
| CN210050298U (en) * | 2019-04-25 | 2020-02-11 | 安徽亚兰密封件有限公司 | Integral sealing device with self-locking function |
| CN211059357U (en) * | 2019-12-06 | 2020-07-21 | 哈尔滨天宝石墨科技发展有限公司 | Large-shaft-diameter sealing device based on moving ring and static ring |
| CN212928297U (en) * | 2020-08-07 | 2021-04-09 | 天津市联强机械密封技术有限公司 | Novel wear-resisting slurry pump integrated mechanical seal |
-
2022
- 2022-11-10 CN CN202211404308.3A patent/CN115649409A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205978461U (en) * | 2016-08-26 | 2017-02-22 | 昆山福步工业设备有限公司 | Great diameter of axle reation kettle of high temperature prevents changeing U type groove structure |
| CN207796096U (en) * | 2018-01-31 | 2018-08-31 | 长安益阳发电有限公司 | A kind of Combined spiral conveyer sealing device |
| CN210050298U (en) * | 2019-04-25 | 2020-02-11 | 安徽亚兰密封件有限公司 | Integral sealing device with self-locking function |
| CN110748499A (en) * | 2019-11-21 | 2020-02-04 | 江苏华青流体科技有限公司 | Pump sealing device for water jet propulsion unit |
| CN211059357U (en) * | 2019-12-06 | 2020-07-21 | 哈尔滨天宝石墨科技发展有限公司 | Large-shaft-diameter sealing device based on moving ring and static ring |
| CN212928297U (en) * | 2020-08-07 | 2021-04-09 | 天津市联强机械密封技术有限公司 | Novel wear-resisting slurry pump integrated mechanical seal |
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