A spliced ventilation duct

Abstract

The utility model discloses a spliced ventilation pipeline, including a plurality of head -to -tail connected pipeline, fixedly connected in the pipeline both ends respectively and limit frame, the limit frame and pipeline end portion form annular insertion groove between, the insert frame is inserted to the inside of adjacent annular insertion groove, and the insert frame is connected through the locking piece between the head -to -tail adjacent, be provided with detachable hanger on the locking piece, the hanger is used for with wall top connection, the locking piece includes the swivel lever, the gasket and the back -to -back shape insert ring fixedly connected in the swivel lever both ends end portion respectively, the gasket end fixedly connected with screw rod. In the utility model, the boom is as the core bearing component of spliced pipeline hoisting, and the bottom can realize " support weight " and " accurate positioning " function, and the pipeline with the positioning constraint is more strong under the stability of airflow impact, and the swing amplitude is reduced, avoids the repeated friction of pipeline bottom, reduces the degree of metal or composite material corrosion by damp air, improves the bearing strength.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically a splicing ventilation duct. Background Technology

[0002] Modular ventilation ducts are ventilation system components assembled from multiple prefabricated duct units and accessories through modular design. They are widely used in building ventilation, air conditioning supply, and industrial exhaust emissions. Their core advantages lie in convenient transportation, flexible installation, and adaptability to different space sizes, making them particularly suitable for ventilation needs in large-span or complex layouts.

[0003] The modular piping system employs a traditional method of separating "flange bolt fixing" and "hanger rod support" for installation. However, as the core load-bearing component for modular piping installation, if the hanger rod can only support weight without precise positioning, the pipe is prone to slight displacement due to its own weight or manual operation. Without positioning constraints, the pipe will sway laterally around the hanger rod under airflow impact, causing repeated friction between the pipe and the support at the bottom of the hanger rod. On the one hand, the anti-corrosion layer (such as galvanized layer or fiberglass coating) on ​​the outer wall of the pipe will be worn away, and the exposed metal or composite material will be susceptible to corrosion by humid air. On the other hand, the inner wall of the hanger rod clamp will thin due to wear, reducing its load-bearing strength. Long-term operation may lead to the risk of clamp breakage and pipe sagging. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a modular ventilation duct that solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a splicing ventilation duct, comprising multiple pipes connected end to end, insert frames and limiting frames respectively fixedly connected to both ends of the pipes, wherein the limiting frames form annular slots with the pipe ends, the insert frames are inserted into adjacent annular slots, and the insert frames and limiting frames adjacent to each other are connected by locking members, wherein the locking members are provided with detachable hanging members, and the hanging members are used to connect to the wall top.

[0008] Preferably, the locking component includes a rotating rod, a washer and a U-shaped insert ring respectively fixedly connected to the two ends of the rotating rod, a screw fixedly connected to the end of the washer, the screw being perpendicular to the rotating rod, a screw hole one being opened on the surface of the insert frame, a screw hole two being opened on the surface of the limiting frame, the positions of the screw hole one and the screw hole two being corresponding, and the screw being threaded into the screw hole one and the screw hole two.

[0009] Preferably, the mounting bracket includes a rod and an L-shaped support block fixedly connected to the side wall of the rod, wherein the L-shaped support block is inserted into the inside of the U-shaped insert ring.

[0010] Preferably, the boom is in the shape of an inverted L, and the upper end of the boom has multiple through holes.

[0011] Preferably, an elastic sealing ring is fixedly connected to the inner wall of the annular slot to improve the sealing between the insertion frame and the limiting frame.

[0012] Preferably, the cross-sectional shape of the conveying channel inside the pipe is rectangular.

[0013] (III) Beneficial Effects

[0014] This utility model provides a modular ventilation duct with the following advantages:

[0015] 1. In this utility model, the initial splicing of two adjacent pipes is achieved by first inserting the insert frame into the annular slot at the end of the limiting frame. Then, the locking purpose is achieved by screwing the screw into screw hole two and screw hole one, and the gasket is made to abut against the side wall of the limiting frame. Next, the L-shaped bearing block of the side wall of the hanger is inserted into the U-shaped insert ring from below to achieve the support purpose. Then, the top of the hanger is fixed to the top of the wall with expansion bolts. At this time, the purpose of hoisting multiple pipes is achieved.

[0016] 2. In this utility model, the hanger rod is the core load-bearing component of the spliced ​​pipe hoisting. The bottom can realize the functions of "supporting weight" and "precise positioning". The pipe with positioning constraint is more stable under the impact of airflow and reduces the swing amplitude; avoids repeated friction at the bottom of the pipe, reduces the degree of corrosion of metal or composite materials by humid air, and improves the support strength. Attached Figure Description

[0017] Figure 1 This is a front-view three-dimensional structural diagram of a splicing ventilation duct proposed in this utility model;

[0018] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a cross-sectional structural diagram of a spliced ​​ventilation duct proposed in this utility model;

[0021] Figure 5 This is a cross-sectional structural diagram of a spliced ​​ventilation duct proposed in this utility model.

[0022] In the diagram: 1. Pipe; 2. Insert frame; 201. Screw hole one; 3. Limiting frame; 301. Ring slot; 302. Screw hole two; 4. Locking component; 41. Rotary rod; 42. Washer; 43. Screw; 44. U-shaped insert ring; 5. Hanging component; 51. Hanging rod; 511. Through hole; 52. L-shaped bearing block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a splicing ventilation duct, including multiple pipes 1 connected end to end, insert frames 2 and limiting frames 3 respectively fixedly connected to both ends of the pipes 1, the limiting frames 3 and the ends of the pipes 1 form annular slots 301, the insert frames 2 are inserted into the adjacent annular slots 301, the end-to-end adjacent insert frames 2 and limiting frames 3 are connected by locking members 4, the locking members 4 are provided with detachable hanging members 5, the hanging members 5 are used to connect to the wall top.

[0025] Insert frame 2 is inserted into the annular slot 301 at the end of limit frame 3 to achieve the initial splicing of two adjacent pipes 1. Locking part 4 achieves the purpose of connecting the two pipes 1 and preventing the two pipes 1 from separating. The lower end of the hook part 5 is connected to the locking part 4, and the upper end of the hook part 5 is fixedly installed on the top of the wall, thus achieving the purpose of supporting the pipes 1.

[0026] Reference Figure 4 and Figure 5 The locking component 4 includes a rotating rod 41, a washer 42 and a U-shaped insert ring 44 respectively fixedly connected to the two ends of the rotating rod 41. A screw 43 is fixedly connected to the end of the washer 42. The screw 43 is set perpendicular to the rotating rod 41. A screw hole 201 is opened on the surface of the insert frame 2, and a screw hole 302 is opened on the surface of the limiting frame 3. The screw holes 201 and 302 are in corresponding positions. The screw 43 is threaded into the screw holes 201 and 302.

[0027] When locking the two pipes 1, first turn the rotary rod 41 to screw the screw 43 into the screw hole 302 and the screw hole 201 to achieve the locking purpose, and make the gasket 42 abut against the side wall of the limit frame 3.

[0028] The function of gasket 42 is that after gasket 42 is tightly fitted with the side wall of limit frame 3, the friction of the contact surface can limit the rotation tendency of screw 43. When vibration occurs in the operation of pipeline 1 (such as airflow impact, equipment resonance), this friction can effectively resist the loosening tendency of screw 43. Combined with the self-locking effect of the thread, it significantly improves the vibration resistance of the locking structure and avoids gaps (risk of air leakage or detachment) at the interface between pipelines 1 after long-term use.

[0029] Reference Figure 2 , Figure 4 and Figure 5 The connector 5 includes a rod 51 and an L-shaped support block 52 fixedly connected to the side wall of the rod 51. The L-shaped support block 52 is inserted into the U-shaped insert ring 44. Specifically, the L-shaped support block 52 is inserted from below, thus achieving the purpose of supporting the U-shaped insert ring 44 and thus achieving the purpose of supporting the pipe 1. When the screw 43 is connected, it is screwed into the screw hole 201 and screw hole 302 in a counterclockwise direction. The screw rod 41 and the U-shaped insert ring 44 are both rotated counterclockwise. Therefore, after the fixing is completed, the screw 43 will not loosen under the weight of the pipe 1, that is, the support of the U-shaped insert ring 44 by the L-shaped support block 52 will not loosen.

[0030] When connecting two pipes 1, the initial splicing of the two adjacent pipes 1 is achieved by first inserting the insert frame 2 into the annular slot 301 at the end of the limiting frame 3. Then, the locking purpose is achieved by screwing the screw 43 into the screw hole 302 and the screw hole 201, and the gasket 42 is brought into contact with the side wall of the limiting frame 3. Next, the L-shaped bearing block 52 on the side wall of the hanger 51 is inserted from below into the U-shaped insert ring 44 to achieve the support purpose. Then, the top of the hanger 51 is fixed to the top of the wall with expansion bolts. At this time, the purpose of hoisting multiple pipes 1 is achieved.

[0031] As the core load-bearing component for hoisting the spliced ​​pipe 1, the bottom of the boom 51 can achieve the functions of "supporting weight" and "precise positioning". The pipe 1 with positioning constraints is more stable under the impact of airflow and reduces the swing amplitude; it avoids repeated friction at the bottom of the pipe 1, reduces the degree of corrosion of metal or composite materials by humid air, and improves the support strength.

[0032] Reference Figure 4 and Figure 5 The rod 51 is in the shape of an inverted L, and the upper end of the rod 51 has multiple through holes 511.

[0033] Select a suitable through hole 511 at the upper end of the hanger 51, pass the expansion bolt through the through hole 511, and screw it into the concrete floor slab, keel or embedded part at the top of the wall; the expansion bolt tightly engages with the building base through "mechanical expansion", and completely transfers the weight of the pipe 1 borne by the hanger 51 to the main body of the building.

[0034] An elastic sealing ring is fixedly connected to the inner wall of the annular slot 301 to improve the sealing between the insert frame 2 and the limiting frame 3.

[0035] The elastic sealing ring (usually made of aging-resistant elastic materials such as EPDM ethylene propylene diene monomer rubber and silicone rubber) forms a "tightly fitting sealing surface" with the outer wall of the insert frame 2 and the inner wall of the annular slot 301 through its own deformation, thus blocking air leakage.

[0036] Reference Figure 4 The cross-sectional shape of the conveying channel inside pipe 1 is rectangular.

[0037] The straight inner wall of a rectangular channel allows airflow to be evenly distributed along the cross-section, while a circular channel is prone to "airflow stratification" because the flow velocity at the center is higher than at the edge. In scenarios where airflow uniformity is required, such as hospital operating rooms and electronic cleanrooms, rectangular channels can be combined with the even distribution of air outlets to achieve "laminar airflow" and avoid substandard cleanliness caused by airflow turbulence.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A modular ventilation duct, characterized in that: It includes multiple pipes (1) connected end to end, insert frames (2) and limiting frames (3) respectively fixedly connected to both ends of the pipes (1), the limiting frames (3) and the ends of the pipes (1) form annular slots (301), the insert frames (2) are inserted into the adjacent annular slots (301), the insert frames (2) and the limiting frames (3) that are adjacent end to end are connected by locking members (4), the locking members (4) are provided with detachable hanging members (5), the hanging members (5) are used to connect to the top of the wall.

2. The splicing ventilation duct according to claim 1, characterized in that: The locking component (4) includes a rotating rod (41), a washer (42) and a U-shaped insert ring (44) respectively fixedly connected to the ends of the rotating rod (41). The end of the washer (42) is fixedly connected to a screw (43). The screw (43) is set perpendicular to the rotating rod (41). The insert frame (2) has a screw hole 1 (201) on its surface, and the limiting frame (3) has a screw hole 2 (302) on its surface. The screw hole 1 (201) and the screw hole 2 (302) are in corresponding positions. The screw (43) is threaded into the screw hole 1 (201) and the screw hole 2 (302).

3. A spliced ​​ventilation duct according to claim 2, characterized in that: The mounting bracket (5) includes a rod (51) and an L-shaped support block (52) fixedly connected to the side wall of the rod (51). The L-shaped support block (52) is inserted into the inside of the U-shaped insert ring (44).

4. A splicing ventilation duct according to claim 3, characterized in that: The rod (51) is in the shape of an inverted L, and the upper end of the rod (51) has multiple through holes (511).

5. A splicing ventilation duct according to claim 4, characterized in that: An elastic sealing ring (6) is fixedly connected to the inner wall of the annular slot (301) to improve the sealing between the insert frame (2) and the limiting frame (3).

6. A splicing ventilation duct according to claim 1, characterized in that: The cross-sectional shape of the conveying channel inside the pipe (1) is rectangular.

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