Divided-flow type ventilation pipeline

Abstract

The utility model relates to the technical field of ventilation pipelines, and particularly discloses a shunting type ventilation pipeline which comprises a main pipeline, the main pipeline is connected with a plurality of butt-joint pipelines, the radius of the air inlet end of each butt-joint pipeline is larger than that of the air outlet end of each butt-joint pipeline, an airtight assembly is arranged in each butt-joint pipeline, and each airtight assembly comprises a sealing ball, a bearing frame and a spring. When the branch pipeline is separated from the butt-joint pipeline, the sealing ball can be pushed to move towards the air outlet end of the butt-joint pipeline under the action of elastic force of the spring, and due to the fact that the radius of the sealing ball is larger than that of the air outlet end of the butt-joint pipeline, the sealing ball can be pushed to move towards the air outlet end of the butt-joint pipeline when the sealing ball abuts against the air outlet end of the butt-joint pipeline finally. The air outlet end of the butt joint pipeline can be completely sealed, so that the main pipeline is isolated from the outside, sealing can be automatically achieved when the branch pipeline is dismantled, the air tightness of the main pipeline is guaranteed, extra sealing measures do not need to be used any more, and the whole ventilation system does not need to be suspended.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts, and particularly designs a split-type ventilation duct. Background Art

[0002] A split-type ventilation duct is a special ventilation duct design, which is mainly used to improve the air circulation and distribution inside a building. This design allows air to be pre-treated and distributed to specific areas before entering the room, thereby improving air quality and energy efficiency. A split-type ventilation duct usually includes a main duct and multiple branch ducts. The main duct is responsible for guiding the main air flow, while the branch ducts are responsible for distributing the air flow to different spaces or areas.

[0003] Traditional split-type ventilation duct systems are usually designed and operated as a whole, and each branch depends on each other to ensure the stable operation of the entire system. However, the traditional split-type ventilation duct system does not fully consider the need for independent replacement and repair of individual branch ducts at the beginning of the design. Therefore, when a certain branch duct fails and needs to be replaced, usually two measures need to be taken: one is to temporarily block the connection between the branch duct and the main duct to ensure the airtightness of the system; the other is to temporarily stop the operation of the entire ventilation system until the replacement and repair work are completed. However, both methods will increase the maintenance cost on the one hand and affect the normal operation of the entire ventilation system on the other hand. Based on this, the inventor purposefully provides a split-type ventilation duct that ensures the airtightness of the entire duct when repairing an individual branch duct. Summary of the Utility Model

[0004] The purpose of the utility model is to provide one aiming at the deficiencies of the prior art to solve the problems in the prior art.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A shunt ventilation duct, which includes a main duct. The main duct is connected to a number of docking ducts. The radius of the air inlet end of the docking duct is greater than the radius of its air outlet end. An airtight component is provided in each docking duct. The airtight component includes a sealing ball, a bearing frame and a spring. The bearing frame is fixedly installed on the inner wall of the docking duct. The sealing ball is arranged in the docking duct. The bearing frame is connected to the sealing ball through a spring. The sealing ball abuts against the air outlet end of the docking duct, and the radius of the sealing ball is greater than the radius of the air outlet end of the docking duct. Each docking duct is connected to a branch duct through a plug-in component. A thimble is fixedly installed in the branch duct. The thimble is coaxially arranged with the sealing ball. When the branch duct is connected to the docking duct, the thimble will push the sealing ball away from the air outlet end of the docking duct. At this time, the branch duct is connected to the main duct through the docking duct. When the branch duct is separated from the docking duct, the sealing ball will abut against the air outlet end of the docking duct under the action of the spring. At this time, the main duct is isolated from the outside.

[0007] As a further optimization or improvement of this solution.

[0008] The airtight component further includes an annular sealing ring and an annular plate. The annular sealing ring is arranged at the air outlet end of the docking duct. The annular plate is fixedly installed on the inner wall of the branch duct. When the docking duct is connected to the branch duct, the annular plate abuts against the air outlet end of the docking duct, causing the annular sealing ring to deform.

[0009] As a further optimization or improvement of this solution.

[0010] A limiting rod is fixedly installed on the sealing ball. The limiting rod is coaxially arranged with the bearing frame and is slidably connected within the bearing frame.

[0011] As a further optimization or improvement of this solution.

[0012] The abutting surface between the thimble and the sealing ball is set as a concave surface.

[0013] As a further optimization or improvement of this solution.

[0014] The plug-in component includes an extension part and a special-shaped threaded pipe. The extension part is fixedly installed at the air outlet end of the docking duct. The special-shaped threaded pipe is fixedly installed at the air inlet end of the branch duct. The special-shaped threaded pipe is sleeved on the air outlet end of the docking duct and is slidably connected to the extension part.

[0015] As a further optimization or improvement of this solution.

[0016] A rotating ring is rotatably installed on the extension part. The special-shaped threaded pipe is located between the rotating ring and the docking duct, and the special-shaped threaded pipe is threadedly connected to the inner wall of the rotating ring.

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

[0018] 1. When the utility model separates the branch pipeline from the butt pipeline, under the elastic force of the spring, the sealing ball will be pushed towards the air outlet end of the butt pipeline. Since the radius of the sealing ball is larger than that of the air outlet end of the butt pipeline, when the sealing ball finally abuts against the air outlet end of the butt pipeline, it will completely seal the air outlet end of the butt pipeline, thereby isolating the main pipeline from the outside world. It can automatically achieve sealing when the branch pipeline is removed, ensuring the airtightness of the main pipeline, without the need to use additional sealing measures, and without the need to suspend the operation of the entire ventilation system. Just insert the replaced branch pipeline back into the butt pipeline to complete the replacement, supporting the maintenance and replacement operations of a single branch pipeline when the entire ventilation system is operating normally.

[0019] 2. When the utility model connects the branch pipeline and the butt pipeline, only need to sleeve the special-shaped threaded pipe at one end of the branch pipeline on the butt pipeline, align the notch of the special-shaped threaded pipe with the extension part and insert it, and then rotate the rotating ring forward. Through the threaded connection between the rotating ring and the special-shaped threaded pipe, the branch pipeline can be gradually butted with the butt pipeline. By rotating the rotating ring in the reverse direction, the butt pipeline can be separated from the branch pipeline. Compared with the traditional butt structure, by rotating the branch pipeline and the butt pipeline for threaded butt joint, this structure only needs to rotate the rotating ring. Whether it is the position of rotation or the weight of rotation, it is more convenient and easier to rotate the rotating ring.

[0020] 3. When the branch pipeline is connected to the butt pipeline, the annular plate will squeeze the annular sealing ring and cause the annular sealing ring to deform, thereby blocking the gap between the butt pipeline and the branch pipeline and preventing air from leaking through the gap, improving the sealing performance during pipeline connection. And it is combined with the butt pipeline and the branch pipeline to achieve butt joint through insertion, avoiding the problem that when the annular plate contacts the annular sealing ring during threaded butt joint, relative rotational force will be generated when rotating again. This relative rotational force acting on the annular sealing ring will cause it to be pulled, resulting in the displacement of the annular sealing ring and further reducing the airtightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present utility model with reference to the drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0023] Figure 2 It is a schematic diagram of the connection structure between the butt pipeline and the sealing ball.

[0024] Figure 3 It is a schematic cross-sectional view of the connection between the butt pipeline and the branch pipeline.

[0025] The labels in the figure are as follows:

[0026] 1, main pipeline; 2, docking pipeline; 3, branch pipeline; 4, carrier; 5, spring; 6, sealing ball; 7, ejector pin; 8, annular plate; 9, annular sealing ring; 10, limiting rod; 11, extension; 12, swivel ring; 13, special-shaped threaded pipe. Specific implementation mode

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0028] See Figures 1-3 , a shunt ventilation pipeline, which includes a main pipeline 1, the main pipeline 1 is connected to a plurality of docking pipelines 2, the radius of the air inlet end of the docking pipeline 2 is greater than the radius of its air outlet end, and an airtight component is arranged in each docking pipeline 2. The airtight component includes a sealing ball 6, a carrier 4 and a spring 5. The carrier 4 is fixedly installed on the inner wall of the docking pipeline 2, the sealing ball 6 is arranged in the docking pipeline 2, the carrier 4 is connected to the sealing ball 6 through the spring 5, the sealing ball 6 abuts against the air outlet end of the docking pipeline 2, and the radius of the sealing ball 6 is greater than the radius of the air outlet end of the docking pipeline 2. Each docking pipeline 2 is connected to a branch pipeline 3 through a plugging component. An ejector pin 7 is fixedly installed in the branch pipeline 3, and the ejector pin 7 is coaxially arranged with the sealing ball 6. When the branch pipeline 3 is connected to the docking pipeline 2, the ejector pin 7 will push the sealing ball 6 away from the air outlet end of the docking pipeline 2. At this time, the branch pipeline 3 is communicated with the main pipeline 1 through the docking pipeline 2. When the branch pipeline 3 is separated from the docking pipeline 2, the sealing ball 6 will abut against the air outlet end of the docking pipeline 2 under the action of the spring 5. At this time, the main pipeline 1 is isolated from the outside.

[0029] In a specific embodiment, a valve is arranged on each branch pipeline 3 for adjusting the air flow. The valve is a prior art, and the specific model is not disclosed in the present invention, which does not affect the integrity of the present invention.

[0030] The working principle of the present invention is as follows: First, when installing the branch pipeline 3, align the branch pipeline 3 with the docking pipeline 2 and insert it, and then connect it through the plugging component. During the insertion process, the ejector pin 7 will first abut against the sealing ball 6. As the branch pipeline 3 is inserted, the ejector pin 7 will push the sealing ball 6 away from the air outlet end of the docking pipeline 2 and compress the spring 5. At this time, the branch pipeline 3 will be communicated with the main pipeline 1 through the docking pipeline 2, and the air flowing in the main pipeline 1 can enter the branch pipeline 3 through the docking pipeline 2 for normal circulation.

[0031] When a certain branch pipe 3 needs to be removed, only need to unlock the branch pipe 3 through the plug-in component, and then directly pull out the branch pipe 3. Under the elastic force of the spring 5, it will push the sealing ball 6 towards the air outlet end of the docking pipe 2. Since the radius of the sealing ball 6 is larger than the radius of the air outlet end of the docking pipe 2, when the sealing ball 6 finally abuts against the air outlet end of the docking pipe 2, it will completely seal the air outlet end of the docking pipe 2, thereby isolating the main pipe 1 from the outside world. It can automatically achieve sealing when the branch pipe 3 is removed, ensuring the airtightness of the main pipe 1, without the need to use additional sealing measures, and even less need to suspend the operation of the entire ventilation system. Just reinsert the replaced branch pipe 3 into the docking pipe 2 to complete the replacement, supporting the maintenance and replacement operations of a single branch pipe 3 while the entire ventilation system is running normally.

[0032] Specifically, the airtight component further includes an annular sealing ring 9 and an annular plate 8. The annular sealing ring 9 is arranged at the air outlet end of the docking pipe 2, and the annular plate 8 is fixedly installed on the inner wall of the branch pipe 3. When the docking pipe 2 is connected to the branch pipe 3, the annular plate 8 abuts against the air outlet end of the docking pipe 2, causing the annular sealing ring 9 to deform.

[0033] In a specific embodiment, when the branch pipe 3 is connected to the docking pipe 2, the annular plate 8 will squeeze the annular sealing ring 9 and cause the annular sealing ring 9 to deform, thereby blocking the gap between the docking pipe 2 and the branch pipe 3 and preventing air from leaking through the gap, improving the sealing performance during pipe connection.

[0034] More specifically, a limiting rod 10 is fixedly installed on the sealing ball 6. The limiting rod 10 is coaxially arranged with the bearing frame 4, and the limiting rod 10 is slidably connected within the bearing frame 4.

[0035] In a specific embodiment, when the sealing ball 6 moves within the docking pipe 2, the limiting rod 10 will also move within the bearing frame 4, avoiding the situation where the sealing ball 6 is only supported by the spring 5, resulting in the position deviation of the sealing ball 6 from the air outlet end of the docking pipe 2, and restricting the sealing ball 6 to only translate in the horizontal position.

[0036] At the same time, it should be noted that the abutting surface of the thimble 7 and the sealing ball 6 is set as a concave surface.

[0037] In a specific embodiment, setting the abutting surface of the thimble 7 and the sealing ball 6 as a concave surface can better fit the shape of the sealing ball 6, making the force exerted by the thimble 7 more stable and concentrated when it abuts against the sealing ball 6, avoiding the phenomenon of slipping when the thimble 7 abuts against the spherical surface, and preventing the situation where the sealing ball 6 cannot be completely pushed away from the air outlet end of the docking pipe 2.

[0038] More specifically, the plug-in component includes an extension part 11 and a special-shaped threaded pipe 13. The extension part 11 is fixedly installed at the air outlet end of the docking pipe 2, and the special-shaped threaded pipe 13 is fixedly installed at the air inlet end of the branch pipe 3. The special-shaped threaded pipe 13 is sleeved on the air outlet end of the docking pipe 2, and the special-shaped threaded pipe 13 is slidably connected to the extension part 11.

[0039] In a specific embodiment, the special-shaped threaded pipe 13 is sleeved on the docking pipe 2, and the notch of the special-shaped threaded pipe 13 is aligned with the extension part 11 and inserted. This restricts the docking of the branch pipe 3 and the docking pipe 2 to only be achieved by plugging and cannot be rotated. This means that when the annular plate 8 presses the annular sealing ring 9, there will only be a force in the vertical direction, avoiding the relative rotational force generated when rotating after the annular plate 8 contacts the annular sealing ring 9 during threaded docking. This relative rotational force acting on the annular sealing ring 9 will cause it to be pulled, resulting in the displacement of the position of the annular sealing ring 9 and further leading to the problem of reduced airtightness.

[0040] At the same time, it should be noted that a rotating ring 12 is rotatably installed on the extension part 11. The special-shaped threaded pipe 13 is located between the rotating ring 12 and the docking pipe 2, and the special-shaped threaded pipe 13 is threadedly connected to the inner wall of the rotating ring 12.

[0041] In a specific embodiment, by rotating the rotating ring 12, due to the limitation of the special-shaped threaded pipe 13 by the extension part 11 and the threaded connection between the rotating ring 12 and the special-shaped threaded pipe 13, the rotating ring 12 will drive the special-shaped threaded pipe 13 to translate on the docking pipe 2, thereby realizing the process of plugging and separating the docking pipe 2 and the branch pipe 3.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A shunt type ventilation duct, characterized in that: It includes a main pipeline (1), the main pipeline (1) is connected to a number of docking pipelines (2), the radius of the air inlet end of the docking pipeline (2) is greater than the radius of its air outlet end, and an airtight component is arranged in each docking pipeline (2). The airtight component includes a sealing ball (6), a bearing frame (4) and a spring (5). The bearing frame (4) is fixedly installed on the inner wall of the docking pipeline (2), the sealing ball (6) is arranged in the docking pipeline (2), the bearing frame (4) is connected to the sealing ball (6) through the spring (5), the sealing ball (6) abuts against the air outlet end of the docking pipeline (2), and the radius of the sealing ball (6) is greater than the radius of the air outlet end of the docking pipeline (2). Each docking pipeline (2) is connected to a branch pipeline (3) through a plugging component. A thimble (7) is fixedly installed in the branch pipeline (3), and the thimble (7) is arranged coaxially with the sealing ball (6). When the branch pipeline (3) is connected to the docking pipeline (2), the thimble (7) will push the sealing ball (6) away from the air outlet end of the docking pipeline (2). At this time, the branch pipeline (3) is communicated with the main pipeline (1) through the docking pipeline (2). When the branch pipeline (3) is separated from the docking pipeline (2), the sealing ball (6) will abut against the air outlet end of the docking pipeline (2) under the action of the spring (5). At this time, the main pipeline (1) is isolated from the outside world.

2. The shunt ventilation duct according to claim 1, characterized in that: The airtight component further includes an annular sealing ring (9) and an annular plate (8). The annular sealing ring (9) is arranged at the air outlet end of the docking pipeline (2), and the annular plate (8) is fixedly installed on the inner wall of the branch pipeline (3). When the docking pipeline (2) is connected to the branch pipeline (3), the annular plate (8) abuts against the air outlet end of the docking pipeline (2) to deform the annular sealing ring (9).

3. The shunt ventilation duct according to claim 1, characterized in that: A limiting rod (10) is fixedly installed on the sealing ball (6), the limiting rod (10) is arranged coaxially with the bearing frame (4), and the limiting rod (10) is slidably connected in the bearing frame (4).

4. A split-flow ventilation duct according to claim 1, characterized in that: The abutting surface between the thimble (7) and the sealing ball (6) is set as a concave surface.

5. A split-flow ventilation duct according to claim 1, characterized in that: The plugging component includes an extension part (11) and a special-shaped threaded pipe (13). The extension part (11) is fixedly installed at the air outlet end of the docking pipeline (2), the special-shaped threaded pipe (13) is fixedly installed at the air inlet end of the branch pipeline (3), the special-shaped threaded pipe (13) is sleeved on the air outlet end of the docking pipeline (2), and the special-shaped threaded pipe (13) is slidably connected with the extension part (11).

6. The split ventilation duct according to claim 5, wherein: A rotating ring (12) is rotatably installed on the extension part (11), the special-shaped threaded pipe (13) is located between the rotating ring (12) and the docking pipeline (2), and the special-shaped threaded pipe (13) is threadedly connected with the inner wall of the rotating ring (12).

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