CN109296756B - Gas movable sealing structure for aviation field - Google Patents
Gas movable sealing structure for aviation field Download PDFInfo
- Publication number
- CN109296756B CN109296756B CN201811497314.1A CN201811497314A CN109296756B CN 109296756 B CN109296756 B CN 109296756B CN 201811497314 A CN201811497314 A CN 201811497314A CN 109296756 B CN109296756 B CN 109296756B
- Authority
- CN
- China
- Prior art keywords
- ejector rod
- sealing ring
- locking bolt
- face
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention relates to a gas movable sealing structure for the aviation field, and belongs to the aviation field. The gas movable sealing structure comprises a mandril, a sealing ring, a pressing washer, a nozzle body and a locking bolt; in order to improve the sealing performance of the sealing ring and surrounding parts and prolong the service life of the sealing ring, the shape of the sealing ring and the assembly relation between the sealing ring and the surrounding contact parts are required to be changed.
Description
Technical Field
The invention relates to a gas movable sealing structure for the aviation field, and belongs to the aviation field.
Background
In the ground protection equipment of an airplane, a certain inflating device inflating nozzle is required to be provided with a push rod to push a self-sealing valve on the airplane so as to be convenient for pressure measurement in the inflating process, the push rod is displaced in a threaded rotation mode, and a gap between the push rod and the nozzle body is sealed by a sealing ring. The existing sealing mode is to sleeve the rubber sealing ring with the O-shaped section on the ejector rod, and then fix the sealing ring by using the groove of the nozzle body and the pressing washer. If the sealing ring is slightly inclined in the assembly process, the sealing ring is easily pressed on the step near the groove of the nozzle body by the pressing washer on the sealing ring, and the sealing ring is damaged. The O-shaped section rubber sealing ring is in line contact with surrounding parts, friction with the rubber ring is kept in the displacement process of the ejector rod, and the sealing performance of the sealing ring is easily lost.
Disclosure of Invention
The invention aims to provide a gas movable sealing structure for the aviation field, which is required to change the shape of a sealing ring and the assembly relation of surrounding contact parts in order to improve the sealing performance of the sealing ring and surrounding parts and prolong the service life of the sealing ring.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a gas activity seal structure for aviation field, this gas activity seal structure includes ejector pin, sealing washer, compresses tightly packing ring, mouth body and lock bolt;
the ejector rod is cylindrical, and the diameters of the rear section and the front section of the ejector rod are smaller than the diameter of the external thread of the middle section of the ejector rod;
the sealing ring is cylindrical, the two end surfaces of the front end and the rear end of the sealing ring are outer cones, and the diameter of an inner hole of the sealing ring is smaller than that of the rear section of the ejector rod;
the front end face of the pressing washer is in an inner conical shape, the rear end face of the pressing washer is in a plane, and the diameter of an inner hole of the pressing washer is consistent with the diameter of the rear section of the ejector rod;
the front end face of the nozzle body is of an internal thread structure, the rear end face of the nozzle body is of an external conical shape, and the diameter of an internal hole of the nozzle body is the same as the diameter of the rear section of the ejector rod;
the diameter of the inner hole of the locking bolt is equal to the diameter of the front section of the ejector rod, the internal thread of the locking bolt is identical to the external thread of the middle section of the ejector rod, the internal thread specification of the locking bolt is identical to the internal thread structure of the front end face of the nozzle body, and the end face of the locking bolt is a plane;
the rear end of the sealing ring is attached to the rear end face of the nozzle body, and the front end of the sealing ring is attached to the front end face of the pressing washer;
the front section of the ejector rod is inserted into an inner hole of the locking bolt through the inner thread of the locking bolt, and the outer thread of the middle section of the ejector rod is meshed and screwed with the inner thread of the locking bolt;
the assembly of the ejector rod and the locking bolt is sequentially inserted into the inner hole of the pressing washer, the inner hole of the sealing ring and the inner hole of the nozzle body by the rear section of the ejector rod, and the inner thread of the locking bolt is meshed and screwed with the inner thread of the front end surface of the nozzle body, so that the end surface of the locking bolt presses the rear end surface of the pressing washer.
Further, one end of the nozzle body is provided with an outer sleeve nut for connecting an inflating valve on the machine.
Further, a handle is arranged on the end head of the front section of the ejector rod.
Further, the roughness of the rear section of the ejector rod is 0.8.
Further, the roughness of the front end of the sealing ring, the rear end of the sealing ring and the inner hole of the sealing ring is 0.8.
Further, the front end surface roughness of the pressing washer is 0.8.
Further, the roughness of the rear end face of the nozzle body is 0.8.
Further, the front end of the sealing ring and the rear end of the sealing ring are 120-degree outer conical shapes.
Further, the rear end face of the nozzle body is 120-degree outer conical.
The sealing surface is enlarged, the structure is stable and the assembly is convenient by changing the shape of the sealing ring, the mouth body for fixing the sealing ring and the pressing washer. The sealing ring is designed into a cylinder shape, so that the contact area between the sealing ring and the ejector rod is increased, and the sealing performance is enhanced. The two ends of the sealing ring are outwards conical at 120 degrees, and the surface of the pressing washer and the mouth body contacted with the sealing ring is designed into an inwards conical at 120 degrees, so that the structural stability of the sealing ring in the moving process of the ejector rod is enhanced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the ejector rod (1) of the invention;
FIG. 3 is a schematic structural view of a seal ring (2) of the invention;
FIG. 4 is a schematic view of the structure of the pressing washer (3) of the present invention;
FIG. 5 is a schematic view of the structure of the nozzle body (4) of the present invention;
FIG. 6 is a schematic view of the structure of the locking bolt (5) of the present invention;
fig. 7 is a schematic diagram of the application of the present invention.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
the utility model provides a gas activity seal structure for aviation field, this gas activity seal structure includes ejector pin 1, sealing washer 2, compresses tightly packing ring 3, mouth body 4 and lock bolt 5;
the ejector rod 1 is cylindrical, and the diameters of the rear ejector rod section 13 and the front ejector rod section 11 are smaller than the diameter of the external thread of the middle ejector rod section 12;
the sealing ring 2 is cylindrical, two end surfaces of the front end 21 and the rear end 22 of the sealing ring are outer cones, and the diameter of an inner hole 23 of the sealing ring is smaller than that of the rear section 13 of the ejector rod;
the front end face 31 of the pressing washer 3 is of an inner conical shape, the rear end face 32 of the pressing washer is of a plane, and the diameter of an inner hole 33 of the pressing washer is consistent with the diameter of the rear section 13 of the ejector rod;
the front end face 41 of the nozzle body 4 is of an internal thread structure, the rear end face 42 of the nozzle body is of an external cone shape, and the diameter of the inner hole 43 of the nozzle body is the same as that of the rear section 13 of the ejector rod;
the diameter of a locking bolt inner hole 51 of the locking bolt 5 is equal to the diameter of the front section 11 of the ejector rod, the internal thread 52 of the locking bolt is the same as the external thread of the middle section 12 of the ejector rod, the specification of the internal thread 53 of the locking bolt is the same as the internal thread structure of the front end face 41 of the nozzle body, and the end face 54 of the locking bolt is a plane;
the rear end 22 of the sealing ring is attached to the rear end face 42 of the nozzle body, and the front end 21 of the sealing ring is attached to the front end face 31 of the pressing washer;
the front section 11 of the ejector rod is inserted into the inner hole 51 of the locking bolt through the inner thread 52 of the locking bolt, and the outer thread of the middle section 12 of the ejector rod is meshed with the inner thread 52 of the locking bolt for screwing;
the assembly of the ejector rod 1 and the locking bolt 5 is sequentially inserted into the pressing washer inner hole 33, the sealing ring inner hole 23 and the nozzle body inner hole 43 by the ejector rod rear section 13, and the locking bolt inner thread 53 is meshed and screwed with the inner thread of the nozzle body front end surface 41, so that the locking bolt end surface 54 presses the pressing washer rear end surface 32.
One end of the nozzle body 4 is provided with an outer sleeve nut for connecting an inflating valve on the machine.
A handle is arranged on the end head of the front section 11 of the ejector rod.
The roughness of the rear section 13 of the ejector pin is 0.8.
The roughness of the front end 21, the rear end 22 and the inner hole 23 of the sealing ring is 0.8.
The roughness of the front end face 31 of the pressing washer is 0.8.
The roughness of the rear end face 42 of the nozzle body is 0.8.
The front end 21 of the sealing ring and the rear end 22 of the sealing ring are 120-degree outer conical.
In practical application, a sleeve nut is arranged at one end of the nozzle body 4 and is used for connecting an inflating valve on the machine.
And a handle is arranged on the end head of the front section 11 of the ejector rod. The mouth body interface connected with the air source can be flexibly designed according to the requirement, as shown in figure 7.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A gaseous activity seal structure for aviation field, its characterized in that: the gas movable sealing structure comprises a mandril (1), a sealing ring (2), a pressing washer (3), a nozzle body (4) and a locking bolt (5);
the ejector rod (1) is cylindrical, and the diameters of the rear ejector rod section (13) and the front ejector rod section (11) are smaller than the diameter of the external thread of the middle ejector rod section (12);
the sealing ring (2) is cylindrical, two end surfaces of the front end (21) and the rear end (22) of the sealing ring are in an outer conical shape, and the diameter of an inner hole (23) of the sealing ring is smaller than that of the rear section (13) of the ejector rod;
the front end face (31) of the pressing washer (3) is of an inner cone shape, the rear end face (32) of the pressing washer is of a plane, and the diameter of an inner hole (33) of the pressing washer is consistent with that of the rear section (13) of the ejector rod;
the front end face (41) of the nozzle body (4) is of an internal thread structure, the rear end face (42) of the nozzle body is of an external cone shape, and the diameter of an inner hole (43) of the nozzle body is the same as that of the rear section (13) of the ejector rod;
the diameter of a locking bolt inner hole (51) of the locking bolt (5) is equal to the diameter of the front section (11) of the ejector rod, the internal thread (52) of the locking bolt is identical to the external thread of the middle section (12) of the ejector rod, the external thread of the locking bolt is matched with the internal thread structure of the front end face (41) of the nozzle body, and the end face (54) of the locking bolt is a plane;
the rear end (22) of the sealing ring is attached to the rear end face (42) of the nozzle body, and the front end (21) of the sealing ring is attached to the front end face (31) of the pressing washer;
the front section (11) of the ejector rod is inserted into an inner hole (51) of the locking bolt through an inner thread (52) of the locking bolt, and an outer thread of the middle section (12) of the ejector rod is meshed with the inner thread (52) of the locking bolt for screwing;
the assembly of the ejector rod (1) and the locking bolt (5) is sequentially inserted into the pressing washer inner hole (33), the sealing ring inner hole (23) and the nozzle body inner hole (43) through the ejector rod rear section (13), and the external thread of the locking bolt is meshed and screwed with the internal thread of the front end face (41) of the nozzle body, so that the end face (54) of the locking bolt presses the rear end face (32) of the pressing washer.
2. The gas dynamic seal structure for the aviation field according to claim 1, characterized in that: one end of the nozzle body (4) is provided with an outer sleeve nut which is used for connecting an inflating valve on the machine.
3. The gas dynamic seal structure for the aviation field according to claim 1, characterized in that: a handle is arranged on the end of the front section (11) of the ejector rod.
4. The gas dynamic seal structure for the aviation field according to claim 1, characterized in that: the roughness of the post section (13) of the ejector rod is 0.8.
5. The gas dynamic seal structure for the aviation field according to claim 1, characterized in that: the roughness of the front end (21), the rear end (22) and the inner hole (23) of the sealing ring is 0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811497314.1A CN109296756B (en) | 2018-12-07 | 2018-12-07 | Gas movable sealing structure for aviation field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811497314.1A CN109296756B (en) | 2018-12-07 | 2018-12-07 | Gas movable sealing structure for aviation field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109296756A CN109296756A (en) | 2019-02-01 |
| CN109296756B true CN109296756B (en) | 2024-04-02 |
Family
ID=65142798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811497314.1A Active CN109296756B (en) | 2018-12-07 | 2018-12-07 | Gas movable sealing structure for aviation field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109296756B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156421A (en) * | 1990-02-05 | 1992-10-20 | Simmonds S.A. | Fluid-tight connectors for fluid-carrying pipe-lines |
| CN202302451U (en) * | 2011-09-26 | 2012-07-04 | 中国航空工业第六一八研究所 | High-purity nitrogen-inflating equipment air nozzle connector |
| CN202402659U (en) * | 2011-12-27 | 2012-08-29 | 江苏东禾电声配件有限公司 | Special pneumatic valve for double glue mixed pneumatic gluing gun |
| CN105090576A (en) * | 2015-08-20 | 2015-11-25 | 快达消防科技有限公司 | Relief valve |
| CN209262268U (en) * | 2018-12-07 | 2019-08-16 | 江西洪都航空工业集团有限责任公司 | A kind of gas movable sealing structure |
-
2018
- 2018-12-07 CN CN201811497314.1A patent/CN109296756B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156421A (en) * | 1990-02-05 | 1992-10-20 | Simmonds S.A. | Fluid-tight connectors for fluid-carrying pipe-lines |
| CN202302451U (en) * | 2011-09-26 | 2012-07-04 | 中国航空工业第六一八研究所 | High-purity nitrogen-inflating equipment air nozzle connector |
| CN202402659U (en) * | 2011-12-27 | 2012-08-29 | 江苏东禾电声配件有限公司 | Special pneumatic valve for double glue mixed pneumatic gluing gun |
| CN105090576A (en) * | 2015-08-20 | 2015-11-25 | 快达消防科技有限公司 | Relief valve |
| CN209262268U (en) * | 2018-12-07 | 2019-08-16 | 江西洪都航空工业集团有限责任公司 | A kind of gas movable sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109296756A (en) | 2019-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205447024U (en) | Capillary sealing connecting structure | |
| CN203548898U (en) | Hole sealing device | |
| CN110778827A (en) | Quick-change connector for sealed inflation of unthreaded hole | |
| CN109296756B (en) | Gas movable sealing structure for aviation field | |
| CN209960041U (en) | Shock-proof anti-loose butt-joint pipe joint device | |
| CN102889444A (en) | Rapid pipe connecting device | |
| CN202252490U (en) | Switching device for gas charging and pressure measurement | |
| CN211175823U (en) | Quick-change connector for sealed inflation of unthreaded hole | |
| CN210119475U (en) | Gas chromatography-mass spectrum interface seal compression ring pressing device | |
| CN204314156U (en) | Pipe fitting low-pressure water compression testing device | |
| CN203445581U (en) | Cable high pressure resistant waterproof joint | |
| CN110056724B (en) | Shock-absorbing and anti-loose butt joint pipe joint device | |
| CN213576197U (en) | Pipe end sealing structure | |
| CN115479130A (en) | Stop buffer valve for fracturing gas production wellhead equipment | |
| CN204554164U (en) | A kind of low voltage experiment machine butt joint | |
| CN203517064U (en) | Pipeline connecting device | |
| CN114776900A (en) | Self-locking sealing pipeline connecting device | |
| CN209262268U (en) | A kind of gas movable sealing structure | |
| CN208488207U (en) | A kind of pressure tapping for pressure gauge calibrating installation | |
| CN202348204U (en) | Self-compensation well head sealing device | |
| CN219142110U (en) | Device for opening and closing an airbag joint | |
| CN210141962U (en) | Thin-wall non-metal pipe air tightness performance detection device | |
| CN218543595U (en) | Pipeline sealing plug | |
| CN208397375U (en) | A kind of air valve device | |
| CN214660061U (en) | Expansion type packer with good sealing effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |