CN210890165U - Double-sliding sealing piece structure of glue pressing valve - Google Patents
Double-sliding sealing piece structure of glue pressing valve Download PDFInfo
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- CN210890165U CN210890165U CN201921650062.1U CN201921650062U CN210890165U CN 210890165 U CN210890165 U CN 210890165U CN 201921650062 U CN201921650062 U CN 201921650062U CN 210890165 U CN210890165 U CN 210890165U
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- sliding sealing
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- glue pressing
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Abstract
The utility model belongs to the technical field of fuel sliding seal, and relates to a double-sliding sealing piece structure of an adhesive pressing valve, which comprises an upper sliding sealing piece, a lower sliding sealing piece, a pressure ring and a fastener; the upper sliding sealing piece and the lower sliding sealing piece are concentrically stacked, pressed at the bottom of the glue pressing valve through the pressing ring and fixed by the fastening piece. The upper sliding sealing piece is flanged upwards and attached to the outer cylindrical surface of the glue pressing valve, and the lower sliding sealing piece is flanged downwards and attached to the outer cylindrical surface of the pressing ring and is installed in a sealing cavity in the center of the shell through a special clamp. The utility model discloses a turn-ups's mounting means about two slip gaskets are respectively has strengthened the flexibility and the leakproofness of moulding valve, has reduced the probability that single gasket wearing and tearing caused the oil leak after long-time the use, has improved the life and the reliability of product.
Description
Technical Field
The utility model belongs to the technical field of the fuel sliding seal, a two slip gasket structures of moulding valve are related to.
Background
The rubber pressing valve structure is mainly used in accessories of an airplane refueling and oil delivery system and is widely adopted in the field of aviation in China. During the process of ground pressure refueling or air oil transportation of the airplane, the opening and closing of the rubber pressing valve are relied on to realize the on-off of a fuel oil pipeline, thereby realizing the functions of refueling or oil transportation. When the glue pressing valve is opened and closed, the movement flexibility and the sealing property between the valve and the inner wall of the shell need to be ensured.
The sliding sealing structure of the existing glue pressing valve generally adopts a single-piece sliding sealing piece or a combination form of a sealing ring and the sliding sealing piece. For the structure of the single sliding sealing piece, after long-time use, the sliding sealing piece is abraded to a certain extent, so that a gap is formed between the sliding sealing piece and the inner wall of the shell, and oil leakage is caused; for the combination form of the sealing ring and the sliding sealing piece, the surface friction force between the glue pressing valve and the inner wall of the shell is large due to the compression effect of the sealing ring, the flexibility of relative movement is influenced, and the clamping stagnation phenomenon is easy to occur.
Disclosure of Invention
The utility model aims at: the utility model aims at providing a two slip gasket structures of moulding valve guarantee the flexibility and the leakproofness of moulding valve motion simultaneously.
The technical solution of the utility model is as follows: a double-sliding sealing piece structure of a glue pressing valve is used for sealing a fuel oil channel in a glue pressing valve shell and a control cavity; comprises an upper sliding sealing sheet, a lower sliding sealing sheet, a press ring and a fastener; the upper sliding sealing piece and the lower sliding sealing piece are concentrically stacked, pressed at the bottom of the glue pressing valve through a pressing ring and fixed by a fastener; the upper sliding sealing piece is flanged upwards and attached to the outer cylindrical surface of the glue pressing valve, and the lower sliding sealing piece is flanged downwards and attached to the outer cylindrical surface of the pressing ring and is installed in a sealing cavity in the center of the shell through a special clamp.
The upper sliding sealing piece and the lower sliding sealing piece are respectively reversely flanged to respectively fill a gap between the glue pressing valve and the shell and a gap between the pressing ring and the shell, and meanwhile, the sealing effect is ensured by ensuring the reasonable matching dimensional tolerance of the outer circular surface of the glue pressing valve, the outer circular surface of the pressing ring and the inner circular surface of the shell.
The utility model has the advantages and beneficial effects: the utility model discloses a structure of two slip gaskets, turn-ups's mounting means about respectively through two slip gaskets has strengthened the flexibility and the leakproofness of moulding valve, has reduced the probability that single gasket wearing and tearing caused the oil leak after long-time the use, has improved the life and the reliability of product.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the structure of the double sliding sealing piece of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A double-sliding sealing piece structure of a glue pressing valve is used for sealing a fuel passage in a shell (4) and a control cavity. Comprises an upper sliding sealing sheet (1), a lower sliding sealing sheet (2), a press ring (3) and a fastener (5); the upper sliding sealing piece (1) and the lower sliding sealing piece (2) are concentrically stacked, pressed at the bottom of the glue pressing valve (6) through the pressing ring (3) and fixed by the fastening piece (5). The upper sliding sealing piece (1) is turned up to be attached to the outer cylindrical surface of the glue pressing valve (6), the lower sliding sealing piece (2) is turned down to be attached to the outer cylindrical surface of the pressing ring (3), and the lower sliding sealing piece is installed in a control cavity in the center of the shell (4) through a special clamp. The fastener (5) adopts a straight-groove countersunk head screw, and is simple and practical.
The upper sliding sealing piece (1) and the lower sliding sealing piece (2) are respectively reversely flanged, gaps between the glue pressing valve (6) and the shell (4) and gaps between the pressing ring (3) and the shell (4) are respectively filled, and meanwhile, the sealing effect is guaranteed by guaranteeing reasonable matching dimensional tolerance of the outer circular surface of the glue pressing valve (6), the outer circular surface of the pressing ring (3) and the inner circular surface of the shell (4).
The upper sliding sealing piece (1) and the lower sliding sealing piece (2) are made of nitrile rubber, and compared with common sealing rubber, the sealing effect and the aging resistance are better. Meanwhile, the two ends of the upper sliding sealing piece (1) and the lower sliding sealing piece (2) are rounded to ensure that the friction force between the upper sliding sealing piece and the shell (4) is reduced when the glue pressing valve (6) works.
Claims (6)
1. A double-sliding sealing piece structure of a glue pressing valve is used for sealing a fuel oil channel in a glue pressing valve shell and a control cavity; the method is characterized in that: comprises an upper sliding sealing sheet (1), a lower sliding sealing sheet (2), a press ring (3) and a fastener (5); the upper sliding sealing piece (1) and the lower sliding sealing piece (2) are concentrically stacked, pressed at the bottom of the glue pressing valve through the pressing ring (3) and fixed by using a fastener (5).
2. A double sliding seal piece structure of a pinch valve according to claim 1, wherein: the upper sliding sealing piece (1) is flanged upwards and is attached to the outer cylindrical surface of the glue pressing valve.
3. A double sliding seal piece structure of a pinch valve according to claim 1, wherein: the lower sliding sealing piece (2) is flanged downwards and is attached to the outer cylindrical surface of the pressing ring (3).
4. A double sliding seal piece structure of a pinch valve according to any of claims 1 to 3, wherein: the upper sliding sealing piece (1) and the lower sliding sealing piece (2) are made of nitrile rubber.
5. The double-sliding-seal-piece structure of the pinch valve according to claim 4, wherein: and rounding the two ends of the upper sliding sealing piece (1) and the lower sliding sealing piece (2) in a turning way.
6. A double sliding seal piece structure of a pinch valve according to claim 1, wherein: the fastener (5) adopts a straight-groove countersunk head screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921650062.1U CN210890165U (en) | 2019-09-29 | 2019-09-29 | Double-sliding sealing piece structure of glue pressing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921650062.1U CN210890165U (en) | 2019-09-29 | 2019-09-29 | Double-sliding sealing piece structure of glue pressing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210890165U true CN210890165U (en) | 2020-06-30 |
Family
ID=71324068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921650062.1U Active CN210890165U (en) | 2019-09-29 | 2019-09-29 | Double-sliding sealing piece structure of glue pressing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210890165U (en) |
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2019
- 2019-09-29 CN CN201921650062.1U patent/CN210890165U/en active Active
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