Air valve capable of being opened and closed in follow-up mode

Abstract

The utility model provides a follow-up opening and closing air valve which aims at solving the problem that a traditional air valve does not have an automatic opening and closing function. The air valve mainly comprises an air valve shell, a reciprocating mechanism and a blade, the blade is coaxially arranged at the output end of the reciprocating mechanism, and the blade is adjusted to close or open a ventilation inner cavity, facing an air pipe, of the air valve along with the action of the reciprocating mechanism; when in use, the air valve provided by the utility model can be automatically opened and closed along with the action of a tower frame which is in rotary butt joint with an air pipe, is in a closed state before butt joint and is automatically opened after butt joint is completed, and has certain heat preservation property and leakproofness; after the external slewing tower is disconnected in butt joint, the air valve can be automatically closed, the leakproofness of a pipeline system can be kept, sundries and impurities are prevented from entering an air pipe, the integrity, heat preservation and leakproofness of connection of the pipeline system can be met after air conditioner air supply and return pipelines are in butt joint, and reliable environment guarantee is provided for task proceeding.

Description

Technical Field

[0001] The utility model relates to the technical field of air valves, in particular to an air valve with follow-up opening and closing. Background Art

[0002] Air valves are widely used in the air supply and return systems and ventilation systems of air conditioners, and are common valve components in air duct pipeline systems, which have functions such as adjusting air volume and pipeline balance.

[0003] With the continuous development of China's aerospace industry, higher requirements are put forward for the stability of air-conditioning environmental protection. The application of civilian air valves in such special fields has certain technical limitations. For example, the functions of ordinary air valves are single and are often used in working conditions that do not require frequent docking. Therefore, for specific scenarios, the air valve is required to have the docking characteristics of automatic opening and closing, and can maintain a certain degree of airtightness and heat preservation after docking. The existing air valves do not have this technical characteristic. Therefore, it is necessary to design and produce a hermetic air valve that can be automatically opened and closed according to the special use requirements of aerospace launch field protection to meet the needs of air supply and return of the air-conditioning system during the launch process. Summary of the Utility Model

[0004] This application aims at the above-mentioned disadvantages in the prior art and provides an air valve with follow-up opening and closing, which can be automatically opened and closed following the movement of the tower rack that rotates and docks with the air duct. It is in a closed state before docking, automatically opens after docking is completed, and has a certain degree of heat preservation and airtightness. After the external rotating tower rack disconnects the docking, the air valve can automatically close, which can maintain the airtightness of the pipeline system and prevent sundries and impurities from entering the air duct.

[0005] The technical solution adopted by the utility model is as follows:

[0006] An air valve with follow-up opening and closing, which includes

[0007] An air valve housing, which is used as the installation basis for each component of the air valve and the connection basis during docking;

[0008] A reciprocating mechanism, which has an input end passing through the air valve housing and an output end that converts the linear motion of the input end into rotational motion. At least one group of the reciprocating mechanism is arranged inside one side of the air valve housing;

[0009] Blades, the blades are coaxially arranged on the output end of the reciprocating mechanism, and the blades adjust to close or open the ventilation inner cavity of the air valve facing the air duct with the movement of the reciprocating mechanism.

[0010] Further, two groups of the reciprocating mechanisms are arranged from top to bottom along the direction of the air valve facing the air duct.

[0011] Further, the reciprocating mechanism includes a housing, a set of meshing gears and a rack are arranged inside the housing, the gear is coaxially connected through a rotating shaft fixed between the air valve housing and the housing, one end of the rack is connected with a push rod penetrating through the air valve housing, and the other end thereof is abutted against the inner wall of the housing through a return spring.

[0012] Further, a limiting pulley is also arranged on one side of the rack, and the limiting pulley is installed in a guide rail on the inner wall of the housing along the linear sliding direction.

[0013] Further, the air valve housing includes a main body frame and a flange plate installed on the outer surface of the main body frame, and a plurality of flange holes are evenly distributed on the flange plate.

[0014] Further, a rubber sealing gasket is also arranged on the skirt side of the flange plate facing the air duct.

[0015] Further, the inside of the main body frame is covered with a heat preservation layer.

[0016] Further, an insect-proof net is also covered on the ventilation inner cavity on the side of the air valve housing facing the air duct.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The air valve provided by the present utility model can be automatically opened and closed following the action of an external rotary tower for air duct docking. It is in a closed state before docking, automatically opens after docking is completed, and has certain heat preservation and airtightness; after the external rotary tower disconnects the docking, the air valve can automatically close, maintaining the airtightness of the pipeline system and preventing sundries and impurities from entering the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of the present utility model facing the air duct;

[0020] Figure 2 is Figure 1 a schematic view in the direction of A in

[0021] Figure 3 is a schematic view of the docking of two air ducts of the present utility model under the action of an external rotary tower;

[0022] Figure 4 is a schematic view of the reciprocating mechanism in operation.

[0023] Wherein: 1. Air valve housing; 2. Reciprocating mechanism; 3. Blade; 21. Housing; 22. Gear; 23. Rack; 24. Rotating shaft; 25. Push rod; 26. Return spring; 27. Limiting pulley; 11. Main body frame; 12. Flange plate; 13. Flange hole; 5. Rubber sealing gasket; 6. Heat preservation layer; 7. Insect-proof net; 8. Rotary tower; 9. Air duct. Detailed implementation manners

[0024] The following will describe the detailed implementation manners of the present utility model in conjunction with the accompanying drawings.

[0025] The present utility model provides a wind valve with follow-up opening and closing, aiming to solve the problem that traditional wind valves do not have the function of automatic opening and closing.

[0026] As Figures 1 to 4 shown:

[0027] Embodiment 1:

[0028] Preferably, it includes a wind valve housing 1 used as the installation base for each component of the wind valve and the connection base during docking;

[0029] A reciprocating mechanism 2, which has an input end penetrating the wind valve housing 1 and an output end that converts the linear motion of the input end into rotational motion. Two sets of the reciprocating mechanism 2 are arranged from top to bottom along the direction of the wind valve facing the air duct 9;

[0030] Blades 3, the blades 3 are coaxially arranged on the output end of the reciprocating mechanism 2. When the blades 3 of the two sets of reciprocating mechanisms 2 follow the reciprocating mechanism 2 to act, they jointly close or open the ventilation inner cavity of the wind valve facing the air duct 9.

[0031] In an implementation manner of the present utility model, the reciprocating mechanism 2 includes a housing 21. A set of meshing gears 22 and a rack 23 are arranged inside the housing 21. The gear 22 is coaxially connected through a rotating shaft 24 fixed between the wind valve housing 1 and the housing 21. One end of the rack 23 is connected with a push rod 25 penetrating the wind valve housing 1, and the other end is abutted against the inner wall of the housing 21 by a return spring 26.

[0032] In an implementation manner of the present utility model, a limiting pulley 27 is further arranged on one side of the rack 23. The limiting pulley 27 is installed in the guide rail on the inner wall of the housing 21 along the linear sliding direction.

[0033] In an implementation manner of the present utility model, the wind valve housing 1 includes a main body frame 11 and a flange plate 12 installed on the outer surface of the main body frame 11. A plurality of flange holes 13 are evenly distributed on the flange plate 12.

[0034] In an implementation manner of the present utility model, a rubber sealing gasket 5 is further arranged on the skirt side of the flange plate 12 facing the air duct 9, which has a certain tightness, and the air leakage is not more than 3%.

[0035] In an implementation manner of the present utility model, the inside of the main body frame 11 is covered with a heat preservation layer 6, so as to have heat preservation performance, and can convey hot and cold air, and the temperature attenuation is ≯ 0.3 °C.

[0036] In an embodiment of the present utility model, an insect-proof net 7 is also covered on the ventilation inner cavity on the side of the air valve housing 1 facing the air duct 9, thereby assisting in preventing larger sundries and impurities from entering the air duct 9.

[0037] Embodiment 2:

[0038] Compared with Embodiment 1, the difference in this embodiment is that only one set of reciprocating mechanisms 2 is provided. One set of reciprocating mechanisms 2 is arranged at the center of the air valve housing 1 facing the air duct 9. The blades 3 of the single set of reciprocating mechanisms 2 are larger. When following the movement of the reciprocating mechanisms 2, the ventilation inner cavity of the air valve facing the air duct 9 can be closed or opened by one set of blades 3. However, compared with the cooperative work of two sets of reciprocating mechanisms 2, the advantage is that the structure is simpler, but the stability is slightly worse.

[0039] The specific structure and working principle of the present utility model:

[0040] As Figure 1 and Figure 2 shown, taking the preferred embodiment - two sets of reciprocating mechanisms 2 as an example, two sets of reciprocating mechanisms 2 are arranged at intervals inside the air valve housing 1 facing the air duct 9, that is, one set of blades 3 that rotate with the rotating shafts 24 is installed on each of the two rotating shafts 24 of the air flow inner cavity. When the gear 22 rotates, the two limit positions of the blades 3 are respectively perpendicular to the plane of the air duct 9 and parallel to the plane of the air duct 9. When the blades 3 are parallel to the plane of the air duct 9, the air valve is in a completely closed state. When the blades 3 are perpendicular to the plane of the air duct 9, the air valve is in a completely open state.

[0041] During use, as Figure 3 shown, one set of air valves is installed on the docking surfaces of the two air ducts 9. The air valves establish a connection basis through the flange plates 12 and flange holes 13 on the housing. At this time, the push rods 25 of the reciprocating mechanisms 2 are facing the docking surface, and there is no abutting force on the push rods 25 on one side of the docking surface before docking. At this time, the two sets of blades 3 inside the air valve are in a state parallel to the plane of the air duct 9, that is, in a closed state; as the rotary tower 8 used for docking at the center moves, the two air ducts 9 gradually dock along a circular trajectory. When the two air valves abut, the push rods 25 are subjected to a force, driving the racks 23 to move linearly, compressing the return springs 26, and the gears 22 mesh with the racks 23. The linear motion is converted into the rotational motion of the rotating shafts 24, driving the blades 3 to rotate. When the docking is completed, at this time, the blades 3 are in a state perpendicular to the plane of the air duct 9, that is, completely open, so as to realize that without a power source, the opening and closing of the air valve can follow the docking working state, meet the integrity, heat preservation and airtightness of the pipeline system after the connection of the air supply and return air ducts 9 of the air conditioner, and provide a reliable environmental guarantee for the mission execution.

[0042] The above description is an explanation of the present utility model, not a limitation thereof. The scope defined by the present utility model is referred to the claims. Any form of modification may be made within the protection scope of the present utility model.

Claims

1. A damper with follow-up opening and closing, characterized in that: include: The air valve housing (1) is used as a base for installing the air valve components and as a base for connection during docking; A reciprocating mechanism (2) having an input end penetrating the air outlet valve housing (1) and an output end for converting the linear motion of the input end into rotational motion, wherein the reciprocating mechanism (2) is provided with at least one group inside one side of the air outlet valve housing (1); The blade (3) is coaxially arranged on the output end of the reciprocating mechanism (2), and the blade (3) is adjusted to close or open the ventilation inner cavity of the air valve facing the air duct in accordance with the movement of the reciprocating mechanism (2).

2. A follow-up opening and closing air valve as claimed in claim 1, characterized in that: The reciprocating mechanism (2) is provided in two groups from top to bottom along the direction in which the air valve faces the air duct.

3. The damper with follow-up opening and closing as claimed in claim 1, characterized in that: The reciprocating mechanism (2) comprises a housing (21), a group of mutually meshing gears (22) and racks (23) being arranged inside the housing (21), the gears (22) being coaxially connected via a rotating shaft (24) fixed between the air valve housing (1) and the housing (21), one end of the rack (23) being connected to a push rod (25) penetrating the air outlet valve housing (1), and the other end of the rack (23) being pressed against the inner wall of the housing (21) via a return spring (26).

4. A follow-up opening and closing air valve as claimed in claim 3, characterized in that: A limiting pulley (27) is also provided on one side of the rack (23), and the limiting pulley (27) is installed in a guide rail on the inner wall of the cover (21) along a linear sliding direction.

5. The follow-up opening and closing air valve according to claim 1, characterized in that: The air valve housing (1) comprises a main frame (11) and a flange (12) mounted on the outer surface of the main frame (11); the flange (12) is evenly distributed with a plurality of flange holes (13).

6. A follow-up opening and closing air valve as claimed in claim 5, characterized in that: A rubber sealing ring (5) is also provided on the skirt edge of the flange (12) facing the air duct.

7. The damper capable of being opened and closed with follow-up operation as claimed in claim 5, characterized in that: The interior of the main frame (11) is covered with a thermal insulation layer (6).

8. The follow-up opening and closing air valve according to claim 1, characterized in that: The ventilation inner cavity on the side of the air valve housing (1) facing the air duct is also covered with an insect-proof net (7).

Images