CN219056582U - Spiral locking oil tank switch - Google Patents
Spiral locking oil tank switch Download PDFInfo
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- CN219056582U CN219056582U CN202223209769.3U CN202223209769U CN219056582U CN 219056582 U CN219056582 U CN 219056582U CN 202223209769 U CN202223209769 U CN 202223209769U CN 219056582 U CN219056582 U CN 219056582U
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- sealing ring
- sleeve body
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- groove
- oil
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Abstract
The utility model relates to the field of aviation fuel systems, and provides a spiral locking fuel tank switch, which comprises: the device comprises a nut, an annular cover, a first sealing ring, a central rod, a sleeve body, a second sealing ring, a spring and a radial torsion bar. The sleeve body is provided with a spiral groove, one end of the spiral groove is a circular groove, and the other end of the spiral groove is a platform and groove combined structure; the central rod is provided with an oil leakage hole and an annular groove; the radial torsion bar is fixedly connected with the middle rod; the first sealing ring is an annular sealing piece; the sealing ring is arranged in the annular groove of the central rod; the annular cover is tightly attached to the central rod and presses the sealing ring; the nut is arranged on the thread of the central rod to fix the annular cover, so that the sealing ring is compressed; the spring is installed between the sleeve body and the center rod, is in a compressed state and is used for assisting in compressing the sealing ring. The utility model utilizes the structural design of the sleeve body to ensure that the sealing ring is in a proper compression range, thus forming a novel spiral locking oil drain switch and improving the vibration resistance and maintainability of the product.
Description
Technical Field
The utility model relates to the technical field of aviation fuel systems, in particular to a spiral locking fuel tank switch.
Background
At present, the oil drain switch is widely applied to aviation fuel oil systems, but the existing oil drain switch has low vibration resistance, is difficult to reliably seal in a random vibration environment, has poor maintainability and cannot meet aviation use requirements. In order to overcome the defects, the spiral locking oil drain switch disclosed by the utility model realizes reliable sealing in a random vibration environment, and is designed into a detachable structure, so that the spiral locking oil drain switch is convenient to maintain.
The existing oil drain switch has low vibration resistance performance, is difficult to seal reliably in a random vibration environment, has poor maintainability and cannot meet aviation use requirements.
Disclosure of Invention
The purpose of the utility model is that: the oil drain switch which is reliable in sealing, vibration-resistant and easy to maintain is provided for the aviation fuel system. The switch body, the rod and the sealing ring are designed in structure and size, and the switch body, the rod and the sealing ring are matched with the disc and the nut to form a functional whole with the characteristics of reliable sealing, convenient maintenance and the like.
The technical scheme of the utility model is as follows:
the screw locking oil tank switch comprises a nut 1, an annular cover 2, a first sealing ring 3, a central rod 4, a sleeve body 5, a second sealing ring 6, a spring 7 and a radial torsion bar 8;
the oil tank is provided with an opening, the sleeve body is fixedly inserted into the opening, and the second sealing ring 6 is arranged between the sleeve body and the opening;
the center of the sleeve body is provided with a through hole, the center rod is inserted into the through hole, the spring is arranged between the center rod and the sleeve body, the front end of the center rod is positioned in the oil tank, the nut is in threaded fit with the front end, and the first sealing ring and the annular cover 2 are sleeved at the front end; the outer diameter of the first sealing ring is larger than the aperture of the through hole, the inner diameter of the first sealing ring is smaller than the aperture of the through hole, and the first sealing ring is in sealing fit with the central rod;
the annular cover can compress the first sealing ring at the inner port of the through hole of the sleeve body under the pushing of the nut; the central rod is provided with a central oil path, the front end and the rear end of the central rod are provided with oil holes, and the position of the first sealing ring is closer to the front end than the oil holes at the front end;
the rear end of the center rod is fixed with the radial torsion bar 8, the sleeve body is provided with a spiral groove, the radial torsion bar is in sliding fit with the spiral groove, and the radial torsion bar can drive the center rod to axially displace along the sliding of the spiral groove so as to compress the first sealing ring.
Further, the front end of the center rod is provided with a ring groove, and the first sealing ring is arranged in the ring groove.
Further, the spring is a coil spring.
Further, radial circular arc through holes are formed in two ends of the spiral groove and used for positioning the radial torsion bar.
Further, the annular cover 2 is formed by pressing an elastic metal sheet.
Further, the aperture of the oil through hole at the rear end is larger than that of the oil through hole at the front end.
Through limiting the dimensional tolerance of the sleeve body 5, the central rod 4, the first sealing ring 3 and the radial torsion bar 8, the sealing ring 3 is in a certain compression range so as to adapt to vibration resistance requirements of different orders.
When the switch is in a closed state, the radial torsion bar 8 is rotated into the spiral groove of the switch body 5, the oil leakage hole of the central rod 4 is exposed, meanwhile, the radial torsion bar 8 is tightly attached to the switch body 5 under the action of the elastic force of the spring 7, and the switch is stabilized in an open state, so that an oil discharging function is realized.
When the first sealing ring 3 is damaged to affect sealing, the nut 1 and the annular cover 2 can be sequentially detached for replacement.
The utility model has the advantages that: the utility model provides the oil drain switch which is reliable in sealing, vibration-resistant and easy to maintain for the aviation fuel system.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic view of the present utility model in a closed state;
FIG. 4 is a schematic view of the present utility model in an open state;
wherein: nut 1, annular cover 2, first sealing washer 3, center pole 4, cover body 5, second sealing washer 6, spring 7, radial torsion bar 8, oil tank 9.
Detailed Description
The disclosed examples will be described more fully with reference to the accompanying drawings, in which some, but not all of the disclosed examples are shown. Indeed, many different examples may be described and should not be construed as limited to the examples set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The screw locking oil tank switch comprises a nut 1, an annular cover 2, a first sealing ring 3, a central rod 4, a sleeve body 5, a second sealing ring 6, a spring 7 and a radial torsion bar 8;
the oil tank is provided with an opening, the sleeve body is fixedly inserted into the opening, and the second sealing ring 6 is arranged between the sleeve body and the opening;
the center of the sleeve body is provided with a through hole, the center rod is inserted into the through hole, the spring is arranged between the center rod and the sleeve body, the front end of the center rod is positioned in the oil tank, the nut is in threaded fit with the front end, and the first sealing ring and the annular cover 2 are sleeved at the front end; the outer diameter of the first sealing ring is larger than the aperture of the through hole, the inner diameter of the first sealing ring is smaller than the aperture of the through hole, and the first sealing ring is in sealing fit with the central rod;
the annular cover can compress the first sealing ring at the inner port of the through hole of the sleeve body under the pushing of the nut; the central rod is provided with a central oil path, the front end and the rear end of the central rod are provided with oil holes, and the position of the first sealing ring is closer to the front end than the oil holes at the front end;
the rear end of the center rod is fixed with the radial torsion bar 8, the sleeve body is provided with a spiral groove, the radial torsion bar is in sliding fit with the spiral groove, and the radial torsion bar can drive the center rod to axially displace along the sliding of the spiral groove so as to compress the first sealing ring.
The front end of the center rod is provided with a ring groove, and the first sealing ring is arranged in the ring groove.
The spring is a coil spring.
Radial circular arc through holes are formed in the two ends of the spiral groove and used for positioning the radial torsion bar.
The annular cover 2 is formed by pressing an elastic metal sheet.
The aperture of the oil through hole at the rear end is larger than that of the oil through hole at the front end.
The description of the different advantageous arrangements has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the examples in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Additionally, the different advantageous examples may describe different advantages compared to other advantageous examples. The example or examples selected are chosen and described in order to best explain the principles of the examples, the practical application, and to enable others of ordinary skill in the art to understand the disclosure for various examples with various modifications as are suited to the particular use contemplated.
Claims (6)
1. A spiral locking oil tank switch is characterized in that: the device comprises a nut, an annular cover, a first sealing ring, a central rod, a sleeve body, a second sealing ring, a spring and a radial torsion bar;
the oil tank is provided with an opening, the sleeve body is fixedly inserted into the opening, and the second sealing ring is arranged between the sleeve body and the opening;
the center of the sleeve body is provided with a through hole, the center rod is inserted into the through hole, the spring is arranged between the center rod and the sleeve body, the front end of the center rod is positioned in the oil tank, the nut is in threaded fit with the front end, and the first sealing ring and the annular cover are sleeved at the front end; the outer diameter of the first sealing ring is larger than the aperture of the through hole, the inner diameter of the first sealing ring is smaller than the aperture of the through hole, and the first sealing ring is in sealing fit with the central rod;
the annular cover can compress the first sealing ring at the inner port of the through hole of the sleeve body under the pushing of the nut; the central rod is provided with a central oil path, the front end and the rear end of the central rod are provided with oil holes, and the position of the first sealing ring is closer to the front end than the oil holes at the front end;
the rear end of the center rod is fixed with the radial torsion bar, the sleeve body is provided with a spiral groove, the radial torsion bar is in sliding fit with the spiral groove, and the radial torsion bar can drive the center rod to axially displace along the sliding of the spiral groove so as to compress the first sealing ring.
2. A spiral-lock tank switch as recited in claim 1, wherein: the front end of the center rod is provided with a ring groove, and the first sealing ring is arranged in the ring groove.
3. A spiral-lock tank switch as recited in claim 1, wherein: the spring is a coil spring.
4. A spiral-lock tank switch as recited in claim 1, wherein: radial circular arc through holes are formed in the two ends of the spiral groove and used for positioning the radial torsion bar.
5. A spiral-lock tank switch as recited in claim 1, wherein: the annular cover is formed by pressing an elastic metal sheet.
6. A spiral-lock tank switch as recited in claim 1, wherein: the aperture of the oil through hole at the rear end is larger than that of the oil through hole at the front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223209769.3U CN219056582U (en) | 2022-12-01 | 2022-12-01 | Spiral locking oil tank switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223209769.3U CN219056582U (en) | 2022-12-01 | 2022-12-01 | Spiral locking oil tank switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219056582U true CN219056582U (en) | 2023-05-23 |
Family
ID=86346968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223209769.3U Active CN219056582U (en) | 2022-12-01 | 2022-12-01 | Spiral locking oil tank switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219056582U (en) |
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2022
- 2022-12-01 CN CN202223209769.3U patent/CN219056582U/en active Active
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