Pipeline connecting structure for fresh air system

Abstract

The pipeline connecting structure for the fresh air system comprises a first pipe and a second pipe, one end of the first pipe is connected with a sleeve, the sleeve is connected with a connecting block, one end of the second pipe is connected with a matching ring, the matching ring is provided with a limiting groove, a clamping mechanism used for being matched with the limiting groove is connected in the connecting block, and one end of the first pipe is connected with an abutting ring. The clamping mechanism comprises a hook block, the hook block is slidably connected into a connecting block and abuts against the limiting groove, one end of the hook block is in a conical arrow shape, a bolt is connected to the hook block in a penetrating mode, a through hole is formed in the connecting block, and the bolt is connected to the through hole in a threaded mode. The structure that the abutting ring is matched with the rubber ring is adopted, tight sealing of the pipeline connecting position is achieved, the problem of air leakage caused by vibration and temperature changes is effectively avoided, and the operation efficiency of a fresh air system is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a pipe connection structure for a fresh air system. Background Technology

[0002] Existing fresh air systems typically use flange connections, threaded connections, or snap-fit ​​connections for ductwork. These connectors fix two sections of duct together to ensure smooth airflow. These connection methods are widely used in conventional scenarios, relying on mechanical structures to assemble the ducts. They are a fundamental aspect of fresh air system installation, ensuring the system's basic operational requirements.

[0003] The current duct connection structure of fresh air systems has significant shortcomings. The sealing of most connection methods relies on a single structure, which is prone to gaps due to vibration, temperature changes, etc., after long-term use, leading to air leakage and affecting system efficiency. At the same time, the stability of the connection is poor. Traditional connectors are prone to failure after long-term stress or slight loosening. Moreover, some connection structures lack effective protective design, and the connection points are susceptible to corrosion from the external environment, shortening their service life. In addition, the assembly steps of some connection methods are cumbersome, and subsequent maintenance and disassembly are also inconvenient, making it difficult to meet the requirements of long-term stable operation of fresh air systems.

[0004] Based on this, a duct connection structure for a fresh air system is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a duct connection structure for a fresh air system in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A duct connection structure for a fresh air system includes a first pipe and a second pipe. One end of the first pipe is connected to a sleeve, and a connecting block is connected to the sleeve. One end of the second pipe is connected to a mating ring, and a limiting groove is formed on the mating ring. A snap-fit ​​mechanism for cooperating with the limiting groove is connected inside the connecting block.

[0008] Preferably, one end of the first tube is connected to an abutment ring, and one end of the second tube is connected to a rubber ring for engaging with the abutment ring.

[0009] Preferably, the snap-fit ​​mechanism includes a hook block, which is slidably connected within the connecting block and abuts against the limiting groove. The hook block is an arrowhead with one end tapered. A bolt is connected through the hook block, and a through hole is provided on the connecting block. The bolt is threaded into the through hole.

[0010] Preferably, the hook block is connected to a limiting strip, and there are two limiting strips, which are L-shaped.

[0011] Preferably, a baffle is provided on the side of the connecting block near the limiting strip to limit the separation of the hook block.

[0012] Preferably, a semi-circular ring is rotatably connected to the bolt, and two semi-circular rings are provided, with the two semi-circular rings snapped onto the outside of the second pipe.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. This application achieves a tight seal at the pipe connection by using a structure that combines a contact ring and a rubber ring, effectively avoiding air leakage caused by vibration and temperature changes, and ensuring the operating efficiency of the fresh air system.

[0015] 2. This application adopts a snap-fit ​​mechanism with hook block and limiting groove and bolt auxiliary fixing, combined with the protective design of sleeve and semi-circular ring, which significantly improves the stability of pipeline connection, prevents connection loosening and failure, and reduces the corrosion of the connection by the external environment, thus extending the service life. Attached Figure Description

[0016] Figure 1 A schematic diagram of a pipe connection structure according to an embodiment of the present utility model is shown;

[0017] Figure 2 A schematic diagram of the structure of the abutment ring connection provided according to an embodiment of the present utility model is shown;

[0018] Figure 3 A schematic diagram of the structure of the rubber ring connection provided according to an embodiment of the present invention is shown.

[0019] Figure label:

[0020] 1. Pipe 1; 2. Pipe 2; 3. Sleeve; 4. Connecting block; 5. Limiting strip; 6. Semicircular ring; 7. Bolt; 8. Abutment ring; 9. Hook block; 10. Through hole; 11. Mating ring; 12. Limiting groove; 13. Rubber ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-3 This utility model provides a technical solution:

[0023] A duct connection structure for a fresh air system includes a first pipe 1 and a second pipe 2. One end of the first pipe 1 is connected to a sleeve 3. When the first pipe 1 is connected to the second pipe 2, the sleeve 3 can protect the connection and prevent the connection from being corroded by the outside. A connecting block 4 is connected to the sleeve 3. The connecting block 4 has a hollow structure. One end of the second pipe 2 is connected to a mating ring 11. The mating ring 11 has a limiting groove 12. There are two limiting grooves 12, which are symmetrically arranged on the outside of the mating ring 11. A snap-fit ​​mechanism is connected inside the connecting block 4 to cooperate with the limiting groove 12.

[0024] Specifically, such as Figure 2 and Figure 3 As shown, one end of pipe 1 is connected to an abutment ring 8, and one end of pipe 2 is connected to a rubber ring 13 that cooperates with the abutment ring 8. When pipe 1 and pipe 2 are connected, the abutment ring 8 can tightly abut against the rubber ring 13, thereby ensuring the sealing of the connection.

[0025] Specifically, such as Figure 2 and Figure 3 As shown, the snap-fit ​​mechanism includes a hook block 9, which is slidably connected in the connecting block 4. The hook block 9 abuts against the limiting groove 12. The hook block 9 is an arrow-shaped object with one end tapered. A bolt 7 is connected through the hook block 9. The hook block 9 is rotatably connected to the bolt 7. A through hole 10 is provided on the connecting block 4. The bolt 7 is threadedly connected to the through hole 10.

[0026] Specifically, such as Figure 3 As shown, there are two limit strips 5 connected to the hook block 9. The limit strips 5 are L-shaped and can prevent the hook block 9 from separating from the connecting block 4.

[0027] Specifically, such as Figure 3 As shown, a baffle is provided on the side of the connecting block 4 near the limiting strip 5 to limit the separation of the hook block 9. The baffle can limit one side of the hook block 9, which has the same effect as the limiting strip 5, but the opposite direction of action, thereby preventing the hook block 9 from separating from the connecting block 4.

[0028] Specifically, such as Figure 2 As shown, a semi-circular ring 6 is rotatably connected to the bolt 7. There are two semi-circular rings 6, which are snapped onto the outside of the pipe 2. By setting the semi-circular rings 6, the structure on one side of the sleeve 3 can be sealed to prevent the connection from being corroded by the outside and improve its durability.

[0029] In summary, the duct connection structure for a fresh air system provided in this embodiment allows for the connection of duct 1 and duct 2 when they need to be connected. This is achieved by aligning duct 1 and duct 2 together, ensuring the abutment ring 8 is tightly abutted against the rubber ring 13. Then, the hook block 9 inside the connecting block 4 is pressed, causing one side of the hook block 9 to abut against the limiting groove 12. At this time, the limiting strip 5 abuts against the connecting block 4. A bolt 7 is connected to the through hole 10, ensuring the bolt 7 passes through the connecting hook block 9. A semi-circular ring 6 is then secured to duct 2, with one end of the bolt 7 connected to the semi-circular ring 6. Tightening one end of the bolt 7 completes the connection between duct 1 and duct 2.

[0030] The connection between pipe 1 and pipe 2 is limited by hook block 9, and the connection between hook block 9 and bolt 7 is limited by bolt 7. Even if bolt 7 becomes loose, bolt 7 will still limit the connection between hook block 9. This limiting effect will not be invalid until bolt 7 is completely separated from connecting block 4. That is, the connection between pipe 1 and pipe 2 is greatly improved by this snap-fit ​​mechanism.

[0031] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A duct connection structure for a fresh air system, comprising a duct one (1) and a duct two (2), characterized in that, The pipe one (1) one end is connected with the sleeve (3), the sleeve (3) is connected with the connecting block (4), the pipe two (2) one end is connected with the cooperation ring (11), the cooperation ring (11) is set with the limit slot (12), the connecting block (4) is connected with the clamping mechanism for being mutually matched with the limit slot (12) in.

2. The duct connection structure for a fresh air system according to claim 1, characterized by, The pipe one (1) one end is connected with the abutment ring (8), the pipe two (2) one end is connected with the rubber ring (13) for being mutually matched with the abututment ring (8).

3. The duct connection structure for a fresh air system according to claim 1, characterized by, The clamping mechanism includes the hook block (9), the hook block (9) is slidably connected in the connecting block (4), the hook block (9) is abutted on the limit slot (12), the hook block (9) is the arrow shape of one end being tapered, the bolt (7) is connected on the hook block (9), the through hole (10) is set on the connecting block (4), the bolt (7) is screwed on the through hole (10).

4. The duct connection structure for a fresh air system according to claim 3, characterized by The hook block (9) is connected with the limit strip (5), the limit strip (5) is set with two, the limit strip (5) is L-shaped.

5. The duct connection structure for a fresh air system according to claim 3, characterized by The connecting block (4) is provided with the baffle for separating and limiting the hook block (9) on the side close to the limit strip (5).

6. The duct connection structure for a fresh air system according to claim 3, characterized by The bolt (7) is rotatably connected with the semicircle ring (6), the semicircle ring (6) is set with two, and the two semicircle rings (6) are clamped on the outside of the pipe two (2).

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