CN213361138U - Installation adjustable airtight switch - Google Patents
Installation adjustable airtight switch Download PDFInfo
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- CN213361138U CN213361138U CN202022236358.8U CN202022236358U CN213361138U CN 213361138 U CN213361138 U CN 213361138U CN 202022236358 U CN202022236358 U CN 202022236358U CN 213361138 U CN213361138 U CN 213361138U
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Abstract
The utility model relates to an installation adjustable airtight switch belongs to aircraft system design technical field. The first filler neck is located under the casing, the second filler neck is located the side of casing, the piston is located the inside of casing, the lower extreme of piston passes through the valve pole to be connected with the valve seat, is provided with the nut in the upper end of casing. The utility model can be reliably connected with the rest part of the airtight system to form a channel for gas to flow through, can not automatically separate in various flight states, and has firm connection and no air leakage; the movable part of the air-tight switch is flexible and reliable, the air-tight switch is opened when the movable hatch cover is locked, and the air-tight switch is closed when the movable hatch cover is unlocked; the wear resistance is good, and the excessive wear of the parts in normal work does not occur on the structural part; the installation is adjustable, and the maintainability is good.
Description
Technical Field
The utility model relates to an installation adjustable airtight switch belongs to aircraft system design technical field.
Background
The airtight switch is a component of an airtight system of the aircraft cockpit cover and is used for controlling the on-off of the air from the airtight system conduit into the airtight hose path so as to realize or relieve the cabin airtightness.
The air-tight switch is functionally one of an air passage valve. Generally, air passage valves are classified into two broad categories, automatic valves and actuated valves, according to the manner of actuation. The automatic valve does not need external force to drive, but depends on the energy of the medium to make the valve act, such as a safety valve, a pressure reducing valve, a drain valve, a check valve, an automatic regulating valve and the like; the driving valve is a valve which needs to be operated manually, electrically, hydraulically or pneumatically, such as a gate valve, a stop valve, a throttle valve, a butterfly valve, a ball valve, a plug valve and the like. On one hand, the airtight switch needs to be linked with a pull rod of a cabin cover locking system to realize the function, so that a driving valve is selected, and a method for driving a related mechanism to work by the locking pull rod to switch on and off the air path is reasonable. On the other hand, the airtight switch not only can control the on-off of the path of the gas from the airtight system conduit to the airtight hose, but also needs to realize or relieve the cabin airtightness, and based on the requirements, the functional requirements cannot be met by simply stopping the gas path in a single gas path channel by means of a gate valve, a plug valve, a slide valve and the like. In addition, the airtight switch needs to be linked with a pull rod of a cabin cover locking system, and the airtight switch needs to have a certain installation position adjusting function in consideration of assembly positioning errors.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a canopy system airtight switch, this airtight switch can control the gas circuit break-make, realizes the function of canopy airtight system to simple structure is reliable, the use is maintained conveniently, and the installation is adjustable.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides an installation adjustable airtight switch, first filler neck is located the casing under, and the second filler neck is located the side of casing, and the piston is located the inside of casing, and the lower extreme of piston passes through the valve pole to be connected with the valve seat, is provided with the nut in the upper end of casing.
Furthermore, a hexagonal nut is arranged at the lower end of the valve rod.
Further, a first spring is arranged between the lower end of the piston and the shell.
Furthermore, a second spring is arranged between the lower edge of the upper end of the valve rod and the shell.
Further, a first gasket is arranged at the joint of the nut and the shell.
Furthermore, a sealing rubber ring is arranged between the piston and the inner wall of the shell.
Further, a second gasket is arranged at the joint of the first filler neck and the shell.
Further, a light spring washer is arranged at the joint of the second filler neck and the shell.
Furthermore, one end of the lead seal is connected with the first filler neck, and the other end of the lead seal is connected with the second filler neck.
Further, a third gasket is arranged between the valve seat and the hexagonal nut.
The air-tight switch is linked with the cabin cover locking system, and the pressing of the air-tight switch piston is controlled by a pressing block on the locking pull rod. The working conditions of the airtight switch are: after the movable hatch cover is locked in the closed cabin, the pull rod continues to move, the pressing block on the pull rod presses down the piston to overcome the tension of the first spring, the air release valve is closed, then the piston continues to move downwards to overcome the tension of the second spring, the air inlet valve is opened, and at the moment, air enters the airtight hose through the air inlet valve to seal the cabin.
When the lock is unlocked, the piston is firstly loosened due to the movement of the pull rod, the piston moves upwards under the action of the spring force to open the air bleeding valve, and the air intake valve is closed under the action of the second spring force and the air pressure. At the moment, the gas in the airtight hose is released from the gas release hole on the piston through the gas release valve, and the cabin is unsealed.
The air-tight switch mounting bracket is provided with a row of teeth and can be connected with the machine body through a tooth backing plate and the bracket so as to facilitate the relative position of the air-tight switch and the machine body.
The utility model has the advantages that:
the air-tight switch of the utility model can be reliably connected with the rest part of the air-tight system to form a channel for air to flow through, can not automatically separate in various flight states, and has firm connection and no air leakage; the movable part of the air-tight switch is flexible and reliable, the air-tight switch is opened when the movable hatch cover is locked, and the air-tight switch is closed when the movable hatch cover is unlocked; the wear resistance is good, and the excessive wear of the parts in normal work does not occur on the structural part; the installation is adjustable, and the maintainability is good.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention.
In the figure: 1-a nut; 2. a piston; 3-a first gasket; 4-sealing rubber ring; 5-the valve rod 6-the first spring; 7-a second spring; 8-a shell; 9-a second gasket; 10-a valve seat; 11-a third gasket; 12-hexagonal nut; 13-a first filler neck; 14-lead sealing; 15-light spring washer; 16-second filler neck.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution:
an airtight switch with adjustable installation is disclosed, wherein a first filler neck 13 is positioned right below a shell 8, a second filler neck 16 is positioned on the side surface of the shell 8, a piston 2 is positioned in the shell 8, the lower end of the piston 2 is connected with a valve seat 10 through a valve rod 5, and a nut 1 is arranged at the upper end of the shell 8.
Further, a hexagonal nut 12 is provided at the lower end of the shutter lever 5.
Further, a first spring 6 is provided between the lower end of the piston 2 and the housing 8.
Further, a second spring 7 is provided between a lower edge of the upper end of the shutter lever 5 and the housing 8.
Further, a first washer 3 is provided at the junction of the nut 1 and the housing 8.
Further, a sealing rubber ring 4 is arranged between the piston 2 and the inner wall of the shell 8.
Further, a second gasket 9 is arranged at the joint of the first filler neck 13 and the shell 8.
Further, a light spring washer 15 is arranged at the joint of the second filler neck 16 and the housing 8.
Further, one end of the lead seal 14 is connected to the first filler neck 13, and the other end is connected to the second filler neck 16.
Further, a third washer 11 is disposed between the valve seat 10 and the hexagonal nut 12.
The inside of the housing 8 has a through hole with a diameter smaller than the valve seat 10. In a free state, the valve rod 5 is jacked up by the second spring 7 to drive the valve seat 10 to move upwards to block the inner hole of the shell 8, and the first connecting pipe nozzle 13 is not communicated with the second connecting pipe nozzle 16. Meanwhile, 4 small holes are distributed on the wall surface of the lower end of the piston 2, the inner cavity is communicated with the atmosphere, the second nozzle 16 is communicated with the atmosphere of the cabin through the inner cavity of the shell 8, the small holes of the piston 2 and the air release valve in a free state, and the air tightness of the cabin is relieved at the moment.
The air-tight switch is linked with the cabin cover lock system, and the pressing of the piston 2 of the air-tight switch is controlled by a pressure block on the lock pull rod. After the cabin is locked, the pressing block on the pull rod presses down the piston 2 against the tension of the first spring 6 until the piston 2 props against the valve rod 5, the small hole on the wall surface of the piston 2 is blocked, the air release valve is closed at the moment, and the air-tight switch establishes air-tightness and is not communicated with the atmosphere. Then the piston 2 and the valve rod 5 continue to drive the valve seat 10 to move downwards and leave the inner hole of the shell 8, a passage from the first connecting pipe mouth 13 to the second connecting pipe mouth 16 is formed, the airtight hose is inflated, and the air tightness of the cabin is established.
The shell 8 is connected with the machine body through a tooth backing plate and a support by adopting a triangular tooth-shaped structure so as to facilitate the relative position of the air-tight switch and the lock pull rod.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An installation adjustable airtight switch which characterized in that: the first filler neck (13) is located under the shell (8), the second filler neck (16) is located on the side face of the shell (8), the piston (2) is located inside the shell (8), the lower end of the piston (2) is connected with the valve seat (10) through the valve rod (5), and the upper end of the shell (8) is provided with the nut (1).
2. The installation adjustable hermetic switch of claim 1, wherein: the lower end of the valve rod (5) is provided with a hexagonal nut (12).
3. The installation adjustable hermetic switch of claim 1, wherein: a first spring (6) is arranged between the lower end of the piston (2) and the shell (8).
4. The installation adjustable hermetic switch of claim 1, wherein: a second spring (7) is arranged between the lower edge of the upper end of the valve rod (5) and the shell (8).
5. The installation adjustable hermetic switch of claim 1, wherein: a first gasket (3) is arranged at the joint of the nut (1) and the shell (8).
6. The installation adjustable hermetic switch of claim 1, wherein:
a sealing rubber ring (4) is arranged between the piston (2) and the inner wall of the shell (8).
7. The installation adjustable hermetic switch of claim 1, wherein:
a second gasket (9) is arranged at the joint of the first filler neck (13) and the shell (8).
8. The installation adjustable hermetic switch of claim 1, wherein: a light spring washer (15) is arranged at the joint of the second filler neck (16) and the shell (8).
9. The installation adjustable hermetic switch of claim 1, wherein: one end of the lead seal (14) is connected with the first filler neck (13), and the other end is connected with the second filler neck (16).
10. The installation adjustable hermetic switch of claim 1, wherein: a third gasket (11) is arranged between the valve seat (10) and the hexagonal nut (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022236358.8U CN213361138U (en) | 2020-10-10 | 2020-10-10 | Installation adjustable airtight switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022236358.8U CN213361138U (en) | 2020-10-10 | 2020-10-10 | Installation adjustable airtight switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213361138U true CN213361138U (en) | 2021-06-04 |
Family
ID=76127070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022236358.8U Active CN213361138U (en) | 2020-10-10 | 2020-10-10 | Installation adjustable airtight switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213361138U (en) |
-
2020
- 2020-10-10 CN CN202022236358.8U patent/CN213361138U/en active Active
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