Ventilation components for storing an emission system and a storage emission system

Abstract

The present invention relates to a ventilation component for storing an emission system and a storage emission system. The ventilation component includes: a housing mounted on a liquid storage tank of the storage emission system, with the bottom of the housing being open and communicating with the inside of the liquid storage tank; a constant pressure pipe installed inside the housing, where the constant pressure pipe has a hollow constant pressure chamber; a movable cover connected to the constant pressure pipe, and the movable cover is capable of moving between a shielding state of the movable cover and an open state of the movable cover; and an anti-overflow cover connected to a floating body accommodated inside the constant pressure chamber of the constant pressure pipe through a connecting member passing through a passage of the movable cover, and the anti-overflow cover is capable of moving between a shielding state of the anti-overflow cover and an open state of the anti-overflow cover.

Description

Technical Field

[0001] The present invention relates to a ventilation component for a storage and discharge system, and more particularly to a ventilation component for installation on a storage and discharge system capable of spraying liquid on an aircraft for special purposes. The present invention also relates to a storage and discharge system. The present invention belongs to the field of aircraft functional structure design. Background Art

[0002] Some aircrafts for special purposes, such as fire-fighting aircrafts, have a storage and discharge system capable of spraying liquid.

[0003] During normal flight of the aircraft, the ventilation component of the storage and discharge system needs to be able to maintain pressure balance with the outside world. When spraying liquid, the ventilation component needs to be able to obtain a large amount of gas compensation from the outside in a short time. In addition, considering the shaking during flight, the ventilation component is not allowed to overflow the liquid storage tank of the storage and discharge system. This requires that the ventilation component of the storage and discharge system has the functions of constant pressure ventilation, discharge ventilation, and anti-overflow.

[0004] In the prior art, these functions are achieved by setting a ventilation component with a control system. However, the control system is very complex, and the reliability cannot meet the requirements. Summary of the Invention

[0005] Aiming at the above problems of the prior art, the purpose of the present invention is to provide a ventilation component with the functions of constant pressure ventilation and anti-overflow, which meets the requirements of the functions of the storage and discharge system.

[0006] In a first example of the ventilation component, the ventilation component includes: a housing, the housing is installed on the liquid storage tank of the storage and discharge system, the bottom of the housing is open and communicated with the inside of the liquid storage tank; a constant pressure pipe, the constant pressure pipe is installed inside the housing, wherein the constant pressure pipe has a hollow constant pressure cavity; a movable cover, the movable cover is connected to the constant pressure pipe, the movable cover can move between a shielding state of the movable cover and an open state of the movable cover, wherein in the shielding state of the movable cover, the movable cover shieldingly cooperates with the bottom of the housing from below, wherein in the open state of the movable cover, the movable cover is away from the bottom of the housing, the movable cover is hollow and has a movable cover passage; and an anti-overflow cover, the anti-overflow cover is connected to a floating body accommodated inside the constant pressure cavity of the constant pressure pipe through a connecting member passing through the movable cover passage, the anti-overflow cover can move between a shielding state of the anti-overflow cover and an open state of the anti-overflow cover, wherein in the shielding state of the anti-overflow cover, the anti-overflow cover shieldingly cooperates with the opening of the movable cover leading to the movable cover passage at the bottom from below, wherein in the open state of the anti-overflow cover, the anti-overflow cover is away from the bottom of the movable cover.

[0007] In a second example of the ventilation assembly, optionally including the first example, the movable cover includes a movable part and a cover part connected below the movable part. The movable part is received inside the constant pressure chamber of the constant pressure tube and is capable of moving in the direction of the length extension of the constant pressure tube. The movable part has a movable cover passage, and the cover part has an opening leading to the movable cover passage.

[0008] In a third example of the ventilation assembly, optionally including one or more of the first example and the second example, the movable cover is connected to the constant pressure tube by an elastic member. The elastic member is received between the constant pressure tube and the movable part. The upper end of the elastic member is disposed in the constant pressure tube, and the lower end of the elastic member is disposed at the movable cover.

[0009] In a fourth example of the ventilation assembly, optionally including one or more of the first example to the third example, the movable cover is connected to the constant pressure tube by a magnet assembly. A first magnet in the magnet assembly is disposed in the constant pressure tube, and a second magnet in the magnet assembly is disposed at the movable cover.

[0010] In a fifth example of the ventilation assembly, optionally including one or more of the first example to the fourth example, a floating body is sleeved on the outer periphery of the movable part, and the floating body is capable of moving in the direction of the length extension of the constant pressure tube.

[0011] In a sixth example of the ventilation assembly, optionally including one or more of the first example to the fifth example, the cover part of the movable cover may have a sealing ring at the outer periphery of one side of the bottom of the shielding housing.

[0012] In a seventh example of the ventilation assembly, optionally including one or more of the first example to the sixth example, the housing is connected to a first pipeline at the top. The first pipeline is in fluid communication with the external environment of the aircraft, and the constant pressure tube is open at the top and thus in communication with the first pipeline, or the constant pressure tube is connected to a second pipeline at the top. The second pipeline is in fluid communication with the external environment of the aircraft.

[0013] In an eighth example of the ventilation assembly, optionally including one or more of the first example to the seventh example, the constant pressure tube includes a ventilation part extending and protruding from the housing in a first direction at the top. The ventilation part is in fluid communication with the internal environment of the aircraft.

[0014] In a ninth example of the ventilation assembly, optionally including one or more of the first example to the eighth example, the constant pressure tube is installed inside the housing by a support member. The support member is a plurality of support plates equally spaced circumferentially. The support plates extend in the vertical direction between the housing and the constant pressure tube.

[0015] A storage and discharge system according to an aspect of the present invention is characterized in that the storage and discharge system includes a ventilation assembly according to an aspect of the present invention.

[0016] The venting component for a storage and discharge system according to the present invention achieves a constant-pressure venting and anti-overflow function through a simple mechanical structure. The storage and discharge system needs to be able to maintain pressure balance with the outside world, obtain gas compensation from the outside during spilling, and prevent liquid from overflowing the storage and discharge system during shaking or tilting in flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To describe embodiments of the above and other features of the present invention, a more specific description of the present invention briefly described above will be presented with reference to the exemplary embodiments of the present invention shown in the drawings. It is understood that these drawings only depict the exemplary embodiments of the present invention and should not be considered as limiting its scope. The present invention will be described and explained by using the drawings and additional features and details. In the drawings:

[0018] Figure 1 is a schematic view of a venting component according to an embodiment of the present invention mounted on a liquid storage tank of a storage and discharge system;

[0019] Figure 2 is a perspective view of a venting component according to an embodiment of the present invention;

[0020] Figure 3 is a top view of a venting component according to an embodiment of the present invention; and

[0021] Figure 4 is a side view of a venting component according to an embodiment of the present invention in an anti-overflow state;

[0022] Figure 5 is a side view of a venting component according to an embodiment of the present invention in a constant-pressure venting state;

[0023] Figure 6 is a side view of a venting component according to an embodiment of the present invention in a discharge venting state; and

[0024] Figure 7 is a side view of a venting component according to an alternative embodiment of the present invention in a discharge venting state.

[0025] Figures 1 to 7 Are drawn approximately to scale. However, the dimensions in the drawings are only schematic and do not have to be drawn to scale, but are intended to be more clearly illustrated. In other embodiments, other relative dimensions may be used.

[0026] Herein and in all the following, the same features appearing in different drawings are denoted by the same or similar reference numerals.

[0027] List of Reference Numerals:

[0028] 1 Venting component

[0029] 2 Liquid storage tank

[0030] 10 Housing

[0031] 20 Constant pressure pipe

[0032] 20a Ventilation part

[0033] 30 Movable cover

[0034] 30a Guide part

[0035] 30b Cover part

[0036] 31 Elastic member

[0037] 40 Anti - overflow cover

[0038] 41 Floating body

[0039] 42 Connecting member Detailed implementation manner

[0040] The present invention will be further described below in conjunction with specific embodiments and the accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention is clearly capable of being implemented in many other ways different from this description. Those skilled in the art can make similar generalizations and deductions according to the actual application situation without departing from the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0041] In the present invention, the term "coupled to" means that there is a force transmission path between two components, and is not limited to physically fixing two components together such as bonding, attaching, screwing, etc. It can also directly or indirectly transmit force through elastic members, magnets, etc. and can optionally be separated from each other.

[0042] In the present invention, directional terms, such as "vertical", "horizontal", "top", "bottom", "upper", "lower", "inner", "inward", "outer" and "outward", are used to assist in describing the present invention according to the directions of the embodiments shown in the drawings. The directional terms are not absolute up, down, horizontal, vertical, etc. and should not be construed as limiting the present invention to any specific direction.

[0043] In the present invention, terms such as "first", "second", etc. are not intended to indicate any order, position, quantity or importance, but are merely used as labels to distinguish one element from another.

[0044] Figure 1 The ventilation assembly 1 of an embodiment of the present invention is schematically shown, which is installed on the liquid storage tank 2 of the storage and discharge system.

[0045] Figure 2 A perspective view of a ventilation assembly according to an embodiment of the present invention is schematically shown. The ventilation assembly 1 mainly includes a housing 10, a constant pressure pipe 20, a movable cover 30, and an anti-overflow cover 40.

[0046] The housing 10 is installed on the top of the liquid storage tank 2 of the storage and discharge system. The bottom of the housing 10 is open and communicates with the inside of the liquid storage tank 2.

[0047] In a preferred embodiment of the present invention, the housing 10 of the ventilation assembly 1 is generally cylindrical in shape. However, it can be understood that the shape of the housing 10 is not limited thereto and can also be a rectangular pipe shape.

[0048] In a preferred embodiment of the present invention, the top of the housing 10 of the ventilation assembly 1 is open. However, it can be understood that the top of the housing 10 can also be partially or completely closed and the top surface or the outer peripheral surface of the top is opened and communicates with the inside and / or the environment of the aircraft via a port or a pipeline according to requirements.

[0049] In a preferred embodiment of the present invention, the bottom of the housing 10 of the ventilation assembly 1 is open and communicates with the liquid storage tank 2. However, it can be understood that the bottom of the housing 10 can also be partially or completely closed and the bottom surface or the outer peripheral surface of the bottom is opened and communicates with the liquid storage tank 2 via a port or a pipeline.

[0050] To meet the discharge and ventilation requirements of the ventilation assembly 1, the housing 10 can be connected to the external environment of the aircraft through a pipeline. When the liquid is spilled, the air pressure drops sharply. Therefore, for some aircraft models, it is not suitable to connect to the inside of the aircraft, otherwise it is easy to cause discomfort to the crew.

[0051] In a preferred embodiment of the present invention, the housing 10 is directly connected to a first pipeline (not shown) at the top, and the first pipeline is in fluid communication with the external environment of the aircraft.

[0052] Figure 3 A top view of the ventilation assembly 1 according to an embodiment of the present invention is schematically shown.

[0053] The constant pressure pipe 20 is installed inside the housing 10, and the constant pressure pipe 20 has a hollow constant pressure chamber.

[0054] In a preferred embodiment, as Figure 3 shown, the constant pressure pipe 20 is generally cylindrical in shape. However, it can be understood that the shape of the constant pressure pipe 20 is not limited thereto and can also be a rectangular pipe shape.

[0055] The constant pressure pipe 20 can be installed inside the housing 10 through a support member. Preferably, the support member is a connecting member in the shape of a plurality of support plates that are equally spaced circumferentially. However, it can be understood that the form of the support member is not limited to this, and it can also be other forms that can fix the constant pressure pipe 20 to the housing 10.

[0056] In a preferred embodiment, as Figure 3 shown, the support member is three support plates that are equally spaced circumferentially, and these support plates extend in the Figure 2 vertical direction from the bottom to the top of the housing 10 between the housing 10 and the constant pressure pipe 20.

[0057] To achieve the constant pressure function of the ventilation assembly 1, the constant pressure pipe 20 can be connected to the interior or exterior environment of the aircraft through a pipeline or directly.

[0058] In a preferred embodiment of the present invention, the constant pressure pipe 20 includes a ventilation portion 20a at the top that extends and protrudes from the housing 10, and the ventilation portion 20a is oriented such that the extension axis of the ventilation portion 20a is substantially perpendicular to the extension axis of the constant pressure pipe 20; however, this is not necessary. Specifically, it extends in the Figure 2 horizontal direction. And the ventilation portion 20a can be in fluid communication with the interior environment of the aircraft. The ventilation portion 20a is always open. Setting it to be connected to the exterior environment of the aircraft will inevitably come into contact with rainwater and debris, resulting in contamination of the constant pressure pipe 20 and the liquid.

[0059] The cross-sectional dimensions of the constant pressure pipe 20 and the ventilation portion 20a can be small as long as the constant pressure requirement is met.

[0060] In an alternative embodiment, the constant pressure pipe 20 is open at the top and thus connected to the above-mentioned first pipeline, and together with the housing 10, it is connected to the exterior environment of the aircraft.

[0061] In an alternative embodiment, the constant pressure pipe 20 is connected to a second pipeline different from the first pipeline at the top, and the second pipeline is in fluid communication with the exterior environment of the aircraft.

[0062] Return Figure 2 , in a preferred embodiment, for the convenience of the manufacturing process, the housing 10, the constant pressure pipe 20, and the support plates therebetween are molded in two upper and lower parts in the vertical direction, and then spliced together. Among them, the support plate below the ventilation portion 20a only extends from the top of the housing 10 to below the ventilation portion 20a between the housing 10 and the constant pressure pipe 20, while the other two support plates extend from the lower part of the housing 10 to the top of the housing 10.

[0063] Now, the structures of the movable cover 30 and the anti-overflow cover 40, as well as their blocking states and open states, will be described in detail according to Figures 4 - 6 .

[0064] Figure 4 Schematically shows the ventilation assembly of an embodiment of the present invention in an anti-overflow state, where the movable cover 30 and the anti-overflow cover 40 are both in their respective blocking states, preventing liquid from overflowing from the inside of the storage tank to the outside of the storage and discharge system.

[0065] Figure 5 Schematically shows the ventilation assembly of an embodiment of the present invention in a constant-pressure ventilation state, where the movable cover 30 is in its open state and the anti-overflow cover 40 is in its blocking state. Gas can enter the liquid storage tank 2 of the storage and discharge system from the outside through the constant-pressure pipe 20, ensuring that the inside of the liquid storage tank 2 is connected to the outside, so that the pressure inside the liquid storage tank 2 is constantly consistent with the outside pressure.

[0066] Figure 6 Schematically shows the ventilation assembly of an embodiment of the present invention in a discharge ventilation state, where the movable cover 30 and the anti-overflow cover 40 are both in their respective open states, allowing more outside gas to enter the liquid storage tank 2 from the housing 10, enabling the liquid in the liquid storage tank 2 to be quickly discharged and spilled out.

[0067] The movable cover 30 is (force-transmittingly) connected to the constant-pressure pipe 20. The movable cover 30 can move between the blocking state of the movable cover 30 ( Figure 4 , Figure 5 ) and the open state ( Figure 6 ).

[0068] In the blocking state of the movable cover 30, the movable cover 30 is located at the bottom of the housing 10 and shape-fittingly blocks the bottom of the housing 10 from below, while in the open state of the movable cover 30, the movable cover 30 is away from the bottom of the housing 10. The movable cover 30 is hollow and has a movable cover passage.

[0069] In a preferred embodiment, the movable cover 30 may include a guiding portion 30a above and a cover portion 30b connected below the guiding portion 30a.

[0070] The guiding portion 30a of the movable cover 30 can be accommodated inside the constant-pressure cavity of the constant-pressure pipe 20 and can move in the direction of the length extension of the constant-pressure pipe 20. Specifically, as shown in Figures 4 - 6 , it can move in the vertical direction. The guiding portion 30a does not have to have an overall solid cylindrical wall, but as long as it can guide its vertical movement.

[0071] In a preferred embodiment, the shape of the cover portion 30b of the movable cover 30 is circular as shown in Figure 2 . However, the shape of the cover portion 30b is not limited thereto, but can be any shape that can shape-fittingly block the bottom opening of the housing 10 from below.

[0072] The guiding part 30a of the movable cover 30 is hollow and has a movable cover passage, and the cover part 30b has an opening leading to the movable cover passage.

[0073] In a preferred embodiment, the movable cover 30 is force-transmissively connected to the constant pressure pipe 20 through an elastic member 31. The elastic member 31 pulls the movable cover 30 so that it can move between the shielding state and the open state of the movable cover 30.

[0074] Here, the elastic member 31 provides an elastic force of a predetermined magnitude vertically upward in the initial state.

[0075] The elastic member 31 can be accommodated between the constant pressure pipe 20 and the guiding part 30a of the movable cover 30. In one embodiment, the elastic member 31 is a helical spring, and the elastic member 31 is coiled around the outer periphery of the guiding part 30a. It can be understood that the form of the elastic member 31 is not limited to this, and it can be any elastic member that provides sufficient elastic force to pull the movable cover 30.

[0076] In a preferred embodiment, the upper end of the elastic member 31 is arranged in the constant pressure pipe 20, optionally abuts against or is fixed to the constant pressure pipe 20, and the lower end of the elastic member 31 is arranged at the movable cover 30, optionally abuts against or is fixed to the constant pressure pipe 20. In this embodiment, a protrusion (not shown) is provided inside the constant pressure pipe 20, and the lower end of the elastic member 31 optionally abuts against or is fixed to the protrusion.

[0077] When liquid is spilled, the air pressure in the liquid storage tank 2 drops sharply. At this time, the upward pressure on the movable cover 30 is greater than the pressure inside the liquid storage tank 2 below the movable cover 30, pulling the movable cover 30 downward, and the movable cover 30 is in its open state. Therefore, as Figure 6 shown, the ventilation assembly 1 is in the discharge ventilation state.

[0078] The movable cover 30 being in its open state causes the elastic member 31 to be in a compressed state, and the elastic member 31 thus provides a greater upward elastic force. When the liquid spill is nearly over, the pressure inside and outside the liquid storage tank 2 is balanced, the movable cover 30 is no longer subject to a downward force, and the elastic member 31 pushes the movable cover 30 upward to return to the shielding state of the movable cover 30, restoring the constant pressure ventilation state of the ventilation assembly 1 as Figure 5 shown.

[0079] In an alternative embodiment, as Figure 7 shown, the upper end of the elastic member 31 is arranged at and fixed to the top of the guiding part 30a of the movable cover 30, and the lower end of the elastic member 31 is arranged at and fixed to the inner side wall of the constant pressure pipe 20. In this embodiment, a protrusion is provided inside the constant pressure pipe 20, and the elastic member 31 can be fixed to the protrusion.

[0080] When the movable cover 30 is in its open state, the elastic member 31 is in a stretched state, and thus the elastic member 31 provides an upward elastic force greater than the initial state.

[0081] In another alternative embodiment, the movable cover 30 can be force-transmissively coupled to the constant pressure tube 20 through a magnet assembly (not shown). A plurality of magnets in the magnet assembly pull the movable cover 30 to enable it to move between the shielding state and the open state of the movable cover 30.

[0082] The magnet assembly may include at least one first magnet and at least one second magnet that repel each other, wherein the first magnet is disposed in the constant pressure tube 20, optionally abutted against or fixed to the constant pressure tube 20, and wherein the second magnet is disposed at the movable cover (30), optionally abutted against or fixed to the constant pressure tube 20. In this embodiment, a protrusion is provided inside the constant pressure tube 20, and the second magnet is optionally abutted against or fixed to the protrusion.

[0083] When liquid is spilled, the air pressure inside the liquid storage tank 2 drops sharply. At this time, the upward pressure on the movable cover 30 is greater than the pressure inside the liquid storage tank 2 below the movable cover 30, pulling the movable cover 30 downward, and the movable cover 30 is in its open state. Therefore, the ventilation assembly 1 is in the discharge ventilation state.

[0084] When the movable cover 30 is in its open state, at least one first magnet and at least one second magnet of the magnet assembly that repel each other approach each other, and thus the magnet assembly provides a greater upward magnetic repulsive force. When the liquid spillage is nearly over, the pressure inside and outside the liquid storage tank 2 is balanced, the movable cover 30 is no longer subject to a downward force, and the magnet assembly pushes the movable cover 30 upward to return to the shielding state of the movable cover 30, restoring the constant pressure ventilation state of the ventilation assembly 1.

[0085] In the present invention, the cover portion 30b of the movable cover 30 may optionally have one or more sealing rings at the outer periphery of one side of the bottom of the shielding housing 10 for suppressing or preventing fluid from flowing between the movable cover 30 and the shielding housing 10. When the movable cover 30 is in the shielding state, the movable cover 30 is located at the bottom of the housing 10, and the sealing ring further improves the sealing performance at this position when the movable cover 30 is in the shielding state.

[0086] The anti-overflow cover 40 is connected to the floating body 41 accommodated inside the constant pressure chamber of the constant pressure tube 20 through a connecting member 42 passing through the movable cover passage. The floating body 41 pulls the anti-overflow cover 40 to enable it to move between the shielding state of the anti-overflow cover 40 ( Figure 4 ) and the open state of the anti-overflow cover 40 ( Figure 5 , Figure 6 ).

[0087] In the blocking state of the anti-overflow cover 40, the anti-overflow cover 40 blockingly mates with the opening of the movable cover 30 leading to the movable cover passage at the bottom from below, and in the open state of the anti-overflow cover 40, the anti-overflow cover 40 is away from the bottom of the movable cover 30.

[0088] It can be understood that the density of the floating body 41 is less than the density of the liquid in the storage and discharge system.

[0089] In a preferred embodiment, the floating body 41 is sleeved on the outer periphery of the guiding portion 30a, and the floating body 41 can move in the direction of the length extension of the constant pressure pipe 20. Specifically, as shown in Figures 4 - 6 it can move in the vertical direction.

[0090] In a preferred embodiment, the connecting member 42 can be in a linear shape, but its shape is not limited thereto, and it can be in any shape that can pass through the movable cover passage in the movable cover 30, such as a strip shape.

[0091] When the storage and discharge system shakes or tilts, the movable cover 30 blocks the bottom of the housing 10 due to the traction of the elastic member 31. However, since the anti-overflow cover 40 is in the open state, the liquid will enter the movable cover passage through the opening at the bottom of the movable cover 30 and enter the constant pressure chamber of the constant pressure pipe 20. The constant pressure chamber is long enough so that when a small amount of liquid enters, it will not overflow. But when a predetermined amount of liquid enters, the liquid level in the constant pressure chamber rises, causing the floating body 41 to float upward. The floating body 41 drives the anti-overflow cover 40 to move upward through the connecting member 42 until the anti-overflow cover 40 is in its blocking state, preventing the liquid from continuing to enter the constant pressure chamber and overflowing. Therefore, as shown in Figure 4 the ventilation assembly 1 is in an anti-overflow state.

[0092] When the storage and discharge system returns to the stable state, the liquid flows back to the storage and discharge system, and the floating body 41 drops due to gravity and no longer pulls the anti-overflow cover 40. Therefore, the anti-overflow cover 40 returns to the open state, restoring the constant pressure ventilation state of the ventilation assembly 1 as shown in Figure 5 the figure.

[0093] The above is to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer. The technical solutions of the present invention have been clearly and completely described in combination with the specific embodiments of the present invention and the drawings.

[0094] Although various embodiments have been described above, it should be understood that the described embodiments are part of the embodiments of the present invention, not all of the embodiments, and they are presented by way of example rather than limitation. It is obvious to those skilled in the relevant art that the disclosed subject matter can be implemented in other specific forms without departing from its spirit and essential features.

[0095] Accordingly, the embodiments described above are considered to be exemplary in all respects rather than restrictive, and do not serve as a basis for any limitation on the present invention.

[0096] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present invention to be protected. This disclosure also includes various variations and variations within the equivalent scope. In addition, various combinations, modes, and further include other combinations and modes with only one element, more than one or less than one, which also fall within the scope and thinking scope of this disclosure.

Claims

1. A ventilation component for a storage and discharge system, the ventilation component (1) comprising: A housing (10), the housing (10) being mounted on a liquid storage tank (2) of the storage and discharge system, the bottom of the housing (10) being open and communicating with the interior of the liquid storage tank (2); A constant pressure pipe (20), the constant pressure pipe (20) being mounted inside the housing (10), wherein the constant pressure pipe (20) has a hollow constant pressure chamber; A movable cover (30), the movable cover (30) being connected to the constant pressure pipe (20), the movable cover (30) being capable of moving between a shielding state of the movable cover (30) and an open state of the movable cover (30), wherein in the shielding state of the movable cover (30), the movable cover (30) shieldingly engages the bottom of the housing (10) in a form-fitting manner from below, and wherein in the open state of the movable cover (30), the movable cover (30) is away from the bottom of the housing (10), the movable cover (30) being hollow and having a movable cover passage; And An anti-overflow cover (40), the anti-overflow cover (40) being connected to a floating body (41) accommodated inside the constant pressure chamber of the constant pressure pipe (20) by a connecting member (42) passing through the movable cover passage, the anti-overflow cover (40) being capable of moving between a shielding state of the anti-overflow cover (40) and an open state of the anti-overflow cover (40), wherein in the shielding state of the anti-overflow cover (40), the anti-overflow cover (40) shieldingly engages an opening leading to the movable cover passage at the bottom of the movable cover (30) in a form-fitting manner from below, and wherein in the open state of the anti-overflow cover (40), the anti-overflow cover (40) is away from the bottom of the movable cover (30).

2. The ventilation component according to claim 1, wherein The movable cover (30) includes a movable portion (30a) and a cover portion (30b) connected below the movable portion (30a), the movable portion (30a) being accommodated inside the constant pressure chamber of the constant pressure pipe (20) and being capable of moving in a direction along the length extension of the constant pressure pipe (20), wherein the movable portion (30a) has the movable cover passage and the cover portion (30b) has an opening leading to the movable cover passage.

3. The ventilation component according to claim 2, wherein The movable cover (30) is connected to the constant pressure pipe (20) by an elastic member (31), Wherein the elastic member (31) is accommodated between the constant pressure pipe (20) and the movable portion (30a), an upper end portion of the elastic member (31) is disposed in the constant pressure pipe (20), and a lower end portion of the elastic member is disposed at the movable cover (30).

4. The ventilation component according to claim 1, wherein The movable cover (30) is connected to the constant pressure pipe (20) by a magnet assembly, The first magnet in the magnet assembly is disposed in the constant pressure tube (20), and the second magnet in the magnet assembly is disposed at the movable cover (30).

5. The ventilation assembly according to claim 2, wherein The floating body (41) is sleeved on the outer periphery of the movable part (30a), and the floating body (41) can move in the direction of the length extension of the constant pressure tube (20).

6. The ventilation assembly according to claim 2, wherein The cover part (30b) of the movable cover (30) may have a sealing ring at the outer periphery of one side of the bottom of the shielding housing (10).

7. The ventilation assembly according to claim 1, wherein The housing (10) is connected to a first pipeline at the top, the first pipeline is fluidly connected to the external environment of the aircraft, and The constant pressure tube (20) is open at the top and thus communicates with the first pipeline, or the constant pressure tube (20) is connected to a second pipeline at the top, and the second pipeline is fluidly connected to the external environment of the aircraft.

8. The ventilation assembly according to claim 1, wherein The constant pressure tube (20) includes a ventilation part (20a) extending and protruding from the housing (10) in a first direction at the top, and the ventilation part (20a) is fluidly connected to the internal environment of the aircraft.

9. The ventilation assembly according to claim 1, wherein The constant pressure tube (20) is installed inside the housing (10) through a support member, and the support member is a plurality of support plates equally spaced circumferentially, and the support plates extend vertically between the housing (10) and the constant pressure tube (20).

10. A storage and emission system, characterized in that, The storage and discharge system includes the ventilation assembly (1) according to any one of claims 1-9.

Images