CN107035901B - Screw bleed valve - Google Patents
Screw bleed valve Download PDFInfo
- Publication number
- CN107035901B CN107035901B CN201611148849.9A CN201611148849A CN107035901B CN 107035901 B CN107035901 B CN 107035901B CN 201611148849 A CN201611148849 A CN 201611148849A CN 107035901 B CN107035901 B CN 107035901B
- Authority
- CN
- China
- Prior art keywords
- plunger
- spring
- shell
- inner hole
- seat
- 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 claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 5
- 238000007599 discharging Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- 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
-
- 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
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
-
- 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
- F16N—LUBRICATING
- F16N2210/00—Applications
- F16N2210/08—Aircraft
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a screw propeller air release valve, which comprises a shell with a variable-diameter inner hole, a special-shaped sealing ring, a plunger, a spring and a spring seat; the plunger is arranged at the front end of the reducing inner hole of the shell; the special-shaped sealing ring is clamped in the mounting groove of the plunger, when the plunger is positioned at the forefront end, the special-shaped sealing ring is in interference press connection between the shell and the plunger, and when the plunger is positioned at the rearmost end, the special-shaped sealing ring is separated from the hole wall of the reducing inner hole of the shell; the spring seat is clamped and fixed at the rear end of the reducing inner hole of the shell, and the spring is arranged between the spring limiting wall A and the spring limiting seat B or between the spring limiting seat A and the spring limiting seat A. The invention can discharge excessive gas in the inner cavity of the propeller, and ensures the stable pressure in the cavity; the screw propeller has the advantages of simple structure, convenient installation and disassembly and accurate transmission movement, and can ensure the use function of the screw propeller.
Description
Technical Field
The invention relates to a bleed valve for a propeller enclosed space.
Background
The traditional propeller pitch-changing technology adopts hydraulic pitch-changing, the pitch-changing structure of the hydraulic pitch-changing propeller is complex, the parts are more, oil path holes are required to be arranged on a propeller shell for lubricating the parts in a propeller cavity, engine lubricating oil is introduced into the propeller cavity through a lubricating oil pipe nut, meanwhile, the volatile gas of the lubricating oil is discharged from an oil path, and moreover, the leakage oil which slightly does not affect the work in the propeller cavity cannot be detected, so that the leakage point is inconvenient to find. For this reason, electronically controlled variable pitch propeller technology of simple structure is now being developed.
Along with the development of electronic control variable pitch propeller technology, the propeller structure tends to be simplified, the inner cavity of the propeller becomes a sealing structure sealed by a rubber ring, a certain amount of lubricating grease is filled in the sealing cavity, moving components are arranged in the lubricating cavity, the lubricating grease rotates at a high speed along with the propeller, friction and heat are generated by the components in the cavity in the movement, the lubricating grease volatilizes into gas, certain air pressure is generated in the sealing cavity, and at the moment, in order to ensure the safe operation of the propeller, the excessive air is discharged, and the air pressure in the cavity is ensured to be stable.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides the propeller air release valve which can release excessive air in the inner cavity of the propeller and ensure the stable air pressure in the cavity.
In order to achieve the above object, the technical solution of the present invention is: a propeller air release valve comprises a shell with a reducing inner hole, a special-shaped sealing ring, a plunger, a spring and a spring seat;
the front end of the plunger is provided with a mounting groove for mounting the special-shaped sealing ring; the plunger at the front end of the mounting groove is in a truncated cone shape matched with the reducing inner hole at the front end of the shell, and the plunger at the rear end of the mounting groove is inwards concave to form an arc-shaped groove; the outer wall of the plunger at the rear end of the arc-shaped groove is matched with a reducing inner hole at the corresponding position of the shell, a central air discharging through hole is formed in the plunger, and a plurality of inclined vent holes communicated with the central air discharging through hole are uniformly distributed on the rear wall of the arc-shaped groove; the rear end of the plunger is provided with a spring limiting wall A or extends out of a spring limiting seat A;
the spring seat is provided with a central vent hole, the front end of the spring seat extends out of the spring limit seat B or is a spring limit wall B, and the rear end of the spring seat can be clamped and fixed in a reducing inner hole at the rear end of the shell;
The plunger is arranged at the front end of the reducing inner hole of the shell; the special-shaped sealing ring is clamped in the mounting groove of the plunger, when the plunger is positioned at the forefront end, the special-shaped sealing ring is in interference press connection between the shell and the plunger, and when the plunger is positioned at the rearmost end, the special-shaped sealing ring is separated from the hole wall of the reducing inner hole of the shell; the spring seat is clamped and fixed at the rear end of the reducing inner hole of the shell, and the spring is arranged between the spring limiting wall A and the spring limiting seat B or between the spring limiting seat A and the spring limiting seat A.
The rear part of the plunger matched with the reducing inner hole at the position corresponding to the shell is provided with a circle of groove. The sliding friction of the plunger in the shell is reduced, and the pressure relief is easier.
The rear end of the shell is provided with threads matched with the air release valve installation threaded holes on the propeller positioning pins. The air release valve is convenient to install on the propeller locating pin.
When in use, the invention is fixedly arranged on one of the locating pins of the propeller. When the pressure value of the inner cavity of the propeller is smaller than the elastic force of the spring, the plunger is positioned at the forefront end of the variable-diameter inner hole of the shell, and the special-shaped sealing ring seals the variable-diameter inner hole of the shell and does not release pressure; when the air pressure value of the inner cavity of the screw propeller is larger than the elastic force of the spring, the air pushes the plunger to move backwards, the spring is compressed, the special-shaped sealing ring is separated from the variable-diameter inner hole wall of the shell, gaps appear, the air is discharged along with the gaps through the air discharging through hole of the plunger and the central hole of the spring seat, and the air pressure of the inner cavity of the screw propeller is lowered, so that the stability of the air pressure in the cavity of the screw propeller is maintained. If the oil leakage phenomenon exists in the propeller cavity, the lubricating oil in the cavity is sprayed out of the propeller cavity through the air release valve, so that the oil leakage point can be conveniently found. The invention has simple structure, convenient installation and disassembly and accurate transmission movement, and can ensure the use function of the propeller.
Drawings
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a right side view of the present invention;
FIG. 3 is a front cross-sectional view of a plunger of the present invention;
FIG. 4 is a cross-sectional view of AA of FIG. 3;
FIG. 5 is a front view of the housing of the present invention;
FIG. 6 is a front cross-sectional view of the housing of the present invention;
FIG. 7 is a right side view of the housing of the present invention;
FIG. 8 is a front cross-sectional view of the spring seat of the present invention;
FIG. 9 is a right side view of the spring mount of the present invention;
fig. 10 is a schematic structural view of a special-shaped seal ring in the invention.
Detailed Description
The invention is further described below with reference to the drawings and specific embodiments.
As shown in fig. 1,2, 3, 4,5, 6, 7, 8, 9 and 10, the present embodiment includes a housing 1 having a variable-diameter inner bore 14, a special-shaped seal ring 2, a plunger 3, a spring 4 and a spring seat 5. The front end of the plunger 3 is provided with a mounting groove 7 for mounting the special-shaped sealing ring 2. The plunger 3 at the front end of the mounting groove 7 is a round table shape 6 matched with the reducing inner hole 14 at the front end of the shell 1, and the plunger 3 at the rear end of the mounting groove 7 is inwards concave to form an arc-shaped groove 8. The outer wall 11 of the plunger at the rear end of the arc-shaped groove 8 is matched with a reducing inner hole 14 at the corresponding position of the shell 1, a central air discharging through hole 10 is formed in the plunger, and five (three, four, six and the like) inclined vent holes 12 communicated with the central air discharging through hole 10 are uniformly distributed on the rear wall 13 of the arc-shaped groove 8. The rear end of the plunger 3 is provided with a spring limiting wall A (which can also extend out of the spring limiting seat A). Preferably, the rear part of the plunger 3 matched with the reducing inner hole 14 corresponding to the shell 1 is provided with a circle of grooves 9. The spring seat 5 is provided with a central vent hole 16, the front end of the spring seat extends out of a spring limit seat B17 (also can be a spring limit wall B), and the rear end 18 can be clamped and fixed in the reducing inner hole 14 at the rear end of the shell 1. The plunger 3 is arranged at the front end of the reducing inner hole 14 of the shell 1; the special-shaped sealing ring 2 is clamped in the mounting groove 7 of the plunger 3, when the plunger 3 is positioned at the forefront end, the special-shaped sealing ring 2 is in interference press fit between the shell 1 and the plunger 3, and when the plunger 3 is positioned at the rearmost end, the special-shaped sealing ring 2 is separated from the hole wall of the reducing inner hole 14 of the shell 1; the spring seat 5 is clamped and fixed at the rear end of the reducing inner hole 14 of the shell, and the spring 4 is arranged between the spring limiting wall A and the spring limiting seat B17 (also between the spring limiting seat A and the spring limiting seat A). The air release valve is conveniently arranged on the screw positioning pin, and the rear end of the shell 1 is provided with a thread 15 matched with an air release valve installation threaded hole on the screw positioning pin.
When the air pressure value in the propeller cavity is larger than the elasticity of the spring 4, the plunger 3 moves to the rear end, at the moment, the contact area and the interference of the special-shaped sealing ring 2 and the shell 1 are gradually reduced, air is discharged to the outside of the propeller cavity through the disengaging part of the inclined hole of the shell 1 and the special-shaped sealing ring 2, the five inclined vent holes 12 and the central air release through holes 10 in the middle of the plunger 3 and the central vent holes 16 of the plunger spring seat 5, the pressure in the propeller cavity is reduced, after the pressure in the propeller cavity and the pressure outside the propeller cavity are the same, the plunger 3 moves leftwards under the action of the elasticity of the spring 4, at the moment, the contact area and the interference of the special-shaped sealing ring 2 are restored to the original state, and a passage with the outside atmosphere is closed.
The above-described embodiments are only preferred and exemplary, and those skilled in the art may make equivalent technical modifications in light of the spirit of the present patent, all of which are covered by the scope of protection of the present patent.
Claims (3)
1. A propeller air release valve, characterized in that: the device comprises a shell with a reducing inner hole, a special-shaped sealing ring, a plunger, a spring and a spring seat;
the front end of the plunger is provided with a mounting groove for mounting the special-shaped sealing ring; the plunger at the front end of the mounting groove is in a truncated cone shape matched with the reducing inner hole at the front end of the shell, and the plunger at the rear end of the mounting groove is inwards concave to form an arc-shaped groove; the outer wall of the plunger at the rear end of the arc-shaped groove is matched with a reducing inner hole at the corresponding position of the shell, a central air discharging through hole is formed in the plunger, and a plurality of inclined vent holes communicated with the central air discharging through hole are uniformly distributed on the rear wall of the arc-shaped groove; the rear end of the plunger is provided with a spring limiting wall A or extends out of a spring limiting seat A;
the spring seat is provided with a central vent hole, the front end of the spring seat extends out of the spring limit seat B or is a spring limit wall B, and the rear end of the spring seat can be clamped and fixed in a reducing inner hole at the rear end of the shell;
The plunger is arranged at the front end of the reducing inner hole of the shell; the special-shaped sealing ring is clamped in the mounting groove of the plunger, when the plunger is positioned at the forefront end, the special-shaped sealing ring is in interference press connection between the shell and the plunger, and when the plunger is positioned at the rearmost end, the special-shaped sealing ring is separated from the hole wall of the reducing inner hole of the shell; the spring seat is clamped and fixed at the rear end of the reducing inner hole of the shell, and the spring is arranged between the spring limiting wall A and the spring limiting seat B or between the spring limiting seat A and the spring limiting seat A.
2. The propeller air bleed valve of claim 1, wherein: the rear part of the plunger piston matched with the reducing inner hole at the position corresponding to the shell is provided with a circle of groove.
3. A propeller air bleed valve according to claim 1 or 2, characterized in that: the rear end of the shell is provided with threads matched with the air release valve installation threaded holes on the propeller positioning pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148849.9A CN107035901B (en) | 2016-12-13 | 2016-12-13 | Screw bleed valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611148849.9A CN107035901B (en) | 2016-12-13 | 2016-12-13 | Screw bleed valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107035901A CN107035901A (en) | 2017-08-11 |
| CN107035901B true CN107035901B (en) | 2024-10-08 |
Family
ID=59531199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611148849.9A Active CN107035901B (en) | 2016-12-13 | 2016-12-13 | Screw bleed valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107035901B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605986A (en) * | 2017-09-05 | 2018-01-19 | 安徽江淮汽车集团股份有限公司 | A kind of clutch slave cylinder assembly deflation structure |
| CN108730297B (en) * | 2018-08-15 | 2023-10-03 | 福立旺精密机电（中国）股份有限公司 | Ball plunger and processing and assembling method thereof |
| CN115823301A (en) * | 2022-11-29 | 2023-03-21 | 上海电机学院 | Plug-in type small-flow overflow valve with U-shaped groove spring cover |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206419515U (en) * | 2016-12-13 | 2017-08-18 | 惠阳航空螺旋桨有限责任公司 | A kind of propeller vent valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4303799A1 (en) * | 1993-02-10 | 1994-08-18 | Hydac Technology Gmbh | Vent valve |
| CN2856477Y (en) * | 2006-07-13 | 2007-01-10 | 孔照根 | Improved structure of plunger type inflator |
| CN202064890U (en) * | 2011-04-22 | 2011-12-07 | 中国石油天然气股份有限公司 | Direct-reading type anti-freezing and anti-blocking constant-pressure air release valve |
-
2016
- 2016-12-13 CN CN201611148849.9A patent/CN107035901B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206419515U (en) * | 2016-12-13 | 2017-08-18 | 惠阳航空螺旋桨有限责任公司 | A kind of propeller vent valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107035901A (en) | 2017-08-11 |
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| 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 |