CN210715961U - Electric main shaft front end gas seal ring structure - Google Patents
Electric main shaft front end gas seal ring structure Download PDFInfo
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- CN210715961U CN210715961U CN201921933649.3U CN201921933649U CN210715961U CN 210715961 U CN210715961 U CN 210715961U CN 201921933649 U CN201921933649 U CN 201921933649U CN 210715961 U CN210715961 U CN 210715961U
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- annular groove
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- seal ring
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Abstract
The air seal ring structure is arranged at the front end of the electric spindle and comprises an outer ring and an inner ring which is fixed with the outer ring, an axial air channel and a radial air hole are formed in the outer ring, the radial air hole is communicated with the axial air channel, a first annular groove is formed in the outer peripheral surface of the inner ring, the first annular groove corresponds to the radial air hole in position, the radial air hole is radially positioned outside the first annular groove, and a plurality of radial air distribution through holes are formed in the bottom surface of the first annular groove. The gas coverage of the structure is more comprehensive, and the gas seal effect is effectively improved and optimized.
Description
Technical Field
The utility model relates to an electricity main shaft, in particular to sealed lid structure of front end of electricity main shaft belongs to electricity main shaft technical field.
Background
The air seal is a sealing technology widely used for the current electric spindle, the technology adopts a radial air hole arranged on an air seal ring (some are also called a sealing cover) which is penetrated through by a spindle at the front end of the electric spindle, as shown in figure 5, the radial air hole 3 is generally communicated with an axial air channel 4 on the air seal ring, the axial air channel is communicated with an air supply channel on the electric spindle, during operation, the air supply channel is connected with high-pressure air, the high-pressure air is blown out from a gap between the sealing cover and the spindle, 9 is a hole penetrating through the spindle, thereby realizing the purpose of the air seal, the current air seal ring is an integral structure, and the structure has the defects that: because there is only one radial air hole, high-pressure air is mainly blown out from the radial air hole and adjacent parts, and cannot completely cover the whole circumferential surface of the main shaft, namely, sealing gas is unevenly distributed on the circumferential surface of the main shaft, which undoubtedly causes the sealing problem of the parts which cannot be covered by the gas seal, and the siphon effect can be generated under the serious condition of the unevenness.
Disclosure of Invention
An object of the utility model is to overcome the above-mentioned problem that exists in the atmoseal ring of present electricity main shaft, provide an electricity main shaft front end atmoseal ring structure.
In order to realize the purpose of the utility model, the following technical proposal is adopted: the air seal ring structure is arranged at the front end of the electric spindle and comprises an outer ring and an inner ring which is fixed with the outer ring, an axial air channel and a radial air hole are formed in the outer ring, the radial air hole is communicated with the axial air channel, a first annular groove is formed in the outer peripheral surface of the inner ring, the first annular groove corresponds to the radial air hole in position, the radial air hole is radially positioned outside the first annular groove, and a plurality of radial air distribution through holes are formed in the bottom surface of the first annular groove.
Further, the method comprises the following steps of; and a second annular groove is formed in the radial air hole of the outer ring, and corresponds to the annular groove in position.
Further, the method comprises the following steps of; the number of the air distribution through holes is 4-12.
Further, the method comprises the following steps of; the number of the air distribution through holes is 8.
Further, the method comprises the following steps of; an annular groove III is formed in the inner circumferential surface of the inner ring, and the tail end of each air distribution through hole is located in the annular groove III.
The utility model discloses an actively beneficial technological effect lies in: because the annular groove forms the air chamber structure, the gas redistributes after entering the annular groove, and then enters from each gas distribution through hole in the circumferential direction and is blown out, so that the gas is distributed more uniformly in the circumferential direction of the main shaft, the coverage is more comprehensive, and the gas seal effect is effectively improved and optimized.
Drawings
Fig. 1 is a schematic view of the overall radial cross section of the present invention.
Fig. 2 is a schematic radial cross-section of the outer ring.
Fig. 3 is a schematic radial cross-section of the inner ring.
Fig. 4 is a schematic view of the inner ring.
FIG. 5 is a schematic view of a current air seal ring.
Detailed Description
In order to explain the utility model more fully, the utility model provides an implementation example. These examples are merely illustrative of the present invention and do not limit the scope of the present invention.
The invention is explained in further detail with reference to the drawings, in which the reference symbols are: 1, an outer ring; 2: an inner ring; 3: a radial air hole; 4: an axial gas passage; 5: a first annular groove; 6: a gas distribution through hole; 7: a second annular groove; 8: a third annular groove; 9: a hole penetrating the main shaft.
The gas seal ring structure is arranged at the front end of the electric spindle and comprises an outer ring 1 and an inner ring fixed together with the outer ring 2, an axial gas channel 4 and a radial gas hole 3 are formed in the outer ring and communicated with the axial gas channel, an annular groove I5 is formed in the outer peripheral surface of the inner ring and corresponds to the radial gas hole, the radial gas hole is located outside the annular groove I in the radial direction, and a plurality of radial gas distribution through holes 6 are formed in the bottom surface of the annular groove I; the inner circumferential surface of the inner ring is provided with a third annular groove 8, the tail end of each air distribution through hole is positioned in the third annular groove, and the number of the air distribution through holes is 4-12; more specifically, the number of the air distribution through holes is 8; further optimization, a second annular groove 7 is formed in the radial air hole of the outer ring, and the second annular groove corresponds to the annular groove in position.
The outer ring of the air seal ring can be made of aluminum, the inner ring can be made of copper, the inner ring can be embedded into the outer ring after the outer ring is heated, and the outer ring and the inner ring can be firmly integrated after being cooled.
When the gas seal ring works, high-pressure gas enters the first groove and the second groove from the axial gas channel 4 and the radial gas hole 3, enters the gas distribution through holes distributed in the circumferential direction from the grooves, and can be further homogenized in the circumferential direction after coming out of the third groove, so that the gas seal effect is better.
After the embodiments of the present invention have been described in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above claims, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention all fall within the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments of the examples given in the specification.
Claims (5)
1. Electricity main shaft front end atmoseal loop constructs, its characterized in that: the gas seal ring is composed of an outer ring and an inner ring fixed together with the outer ring, an axial gas channel and a radial gas hole are formed in the outer ring and communicated with the axial gas channel, a first annular groove is formed in the outer peripheral surface of the inner ring and corresponds to the radial gas hole in position, the radial gas hole is located outside the first annular groove in the radial direction, and a plurality of radial gas distribution through holes are formed in the bottom surface of the first annular groove.
2. The electric spindle front end gas seal ring structure of claim 1, wherein: and a second annular groove is formed in the radial air hole of the outer ring, and corresponds to the annular groove in position.
3. The electric spindle front end gas seal ring structure of claim 1, wherein: the number of the air distribution through holes is 4-12.
4. The electric spindle front end gas seal ring structure of claim 1, wherein: the number of the air distribution through holes is 8.
5. The electric spindle front end gas seal ring structure of claim 1, wherein: an annular groove III is formed in the inner circumferential surface of the inner ring, and the tail end of each air distribution through hole is located in the annular groove III.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933649.3U CN210715961U (en) | 2019-11-11 | 2019-11-11 | Electric main shaft front end gas seal ring structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921933649.3U CN210715961U (en) | 2019-11-11 | 2019-11-11 | Electric main shaft front end gas seal ring structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210715961U true CN210715961U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921933649.3U Active CN210715961U (en) | 2019-11-11 | 2019-11-11 | Electric main shaft front end gas seal ring structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN210715961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117366002A (en) * | 2023-11-13 | 2024-01-09 | 烟台东德实业有限公司 | High-pressure air seal waterproof method for worm end of high-speed centrifugal compressor |
-
2019
- 2019-11-11 CN CN201921933649.3U patent/CN210715961U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117366002A (en) * | 2023-11-13 | 2024-01-09 | 烟台东德实业有限公司 | High-pressure air seal waterproof method for worm end of high-speed centrifugal compressor |
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