Pipeline connecting device

Abstract

The utility model discloses a pipeline connecting device which comprises a fixedly-arranged main pipeline and a bent pipe fixedly connected with the main pipeline, a first flange is fixedly arranged at the end of the main pipeline, a second flange is fixedly arranged at the fixed end of the bent pipe, and a sealing plate is detachably arranged at the connecting end of the bent pipe. The first flange and the second flange are sealed and fixedly connected, the sealing plate is matched with the bent pipe in a threaded or inserted mode, and the sealing plate is connected with the bent pipe in a sealed mode. The pipeline connecting device is reasonable in structure, the labor intensity of workers is reduced, and the pipeline cleaning and purging efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline cleaning technology, and in particular to a pipeline connection device. Background Technology

[0002] In the chemical storage industry, cleaning chemical pipelines is a very frequent process when pipeline materials are handled or when the product type is changed.

[0003] Traditional pipeline cleaning and pigging operations require the removal of blind flanges at the end of the pipeline. DN200 blind flanges are heavy and large, making them difficult to handle during removal. They can easily injure people if not handled carefully, placing a heavy physical burden on employees. This is time-consuming, labor-intensive, and poses safety hazards.

[0004] In the prior art, such as the temporary fixing device for blind flanges described in CN221402110U, a flange is fixedly installed at the end of the pipeline and a blind flange is detachably fixedly connected to the flange. A limiting component is provided between the pipeline or flange and the blind flange for limiting and fixing the blind flange after disassembly. The limiting component includes a movable connecting member. One of the pipeline and the flange, as well as the blind flange, are all connected to the connecting member.

[0005] Although the aforementioned temporary fixing device for blind flanges does not require transportation after the blind flanges are removed, the excessive number of fixing bolts between the blind flanges and flanges makes disassembly time-consuming, wastes manpower, and results in low pipeline cleaning efficiency.

[0006] Therefore, it is necessary to improve the existing pipeline connection devices. Utility Model Content

[0007] The purpose of this invention is to overcome the defects in the existing technology and provide a pipeline connection device that can quickly connect pipelines, reduce manual labor intensity, and improve pipeline cleaning and purging efficiency.

[0008] To achieve the above technical effects, the technical solution of this utility model is as follows: a pipeline connection device, including a main pipeline fixedly installed and a bend fixedly connected to the main pipeline. A first flange is fixedly installed at the end of the main pipeline, and a second flange is fixedly installed at the fixed end of the bend. A sealing plate is detachably installed at the connecting end of the bend. The first flange and the second flange are sealed and fixedly connected. The sealing plate is threaded or plugged into the bend, and the sealing plate is sealed to the bend.

[0009] A preferred technical solution is that a protruding ring is fixedly provided at the connecting end of the bent pipe, the sealing plate is provided with a snap-fit ​​handle that limits and cooperates with the protruding ring, the snap-fit ​​handle is provided with a snap-fit ​​part, and the protruding ring is sandwiched between the sealing plate and the snap-fit ​​part.

[0010] A preferred technical solution is that the snap-fit ​​handle is rotatably connected to the sealing plate, and a limiting component is provided between the snap-fit ​​handle and the sealing plate to limit the snap-fit ​​portion to the snap-fit ​​position.

[0011] A preferred technical solution is that the limiting component includes a tension spring disposed between the sealing plate and the snap-fit ​​handle, and the tension spring is disposed between the rotating shaft of the snap-fit ​​handle and the snap-fit ​​portion.

[0012] A preferred technical solution is that the convex ring is provided with a protrusion that limits and cooperates with the snap-fit ​​portion.

[0013] A preferred technical solution is that the bent pipe is fixedly provided with a support platform, which is used to temporarily place the sealing plate during the bending operation.

[0014] A preferred technical solution is that the support platform is provided with a through hole for the snap-fit ​​handle to pass through.

[0015] A preferred technical solution is that the side wall of the bend is provided with a pressure relief pipe, and the pressure relief pipe is provided with a pressure relief valve to control its opening and closing.

[0016] The preferred technical solution is that the pressure relief port of the pressure relief pipe is set downward.

[0017] A preferred technical solution is that a sealing ring is fixedly provided at the end of the convex ring.

[0018] The advantages and beneficial effects of this utility model are as follows: The pipeline connection device of this utility model has a reasonable structure. It removes the blind plate at the end of the original main pipeline, installs a bend, and sets a sealing plate at the end of the bend for quick release. This improves the connection speed of the pipeline, reduces the labor intensity of workers, and improves the efficiency of pipeline cleaning and purging. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 A sectional view;

[0021] Figure 3 This is a structural diagram of the bend in use;

[0022] Figure 4 This is a schematic diagram of the structure of a bend;

[0023] Figure 5 This is a schematic diagram of the sealing plate structure;

[0024] Figure 6 yes Figure 5 A sectional view;

[0025] In the diagram: 1. Main pipe; 11. First flange; 2. Bend; 21. Second flange; 22. Raised ring; 23. Raised block; 24. Support platform; 25. Through hole; 3. Sealing plate; 4. Snap-fit ​​handle; 41. Snap-fit ​​part; 5. Tension spring; 6. Pressure relief pipe; 61. Pressure relief valve; 7. Sealing ring. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example

[0028] like Figure 1-6 As shown, the pipeline connection device of the embodiment includes a main pipeline 1 fixedly installed and a bend 2 fixedly connected to the main pipeline 1. A first flange 11 is fixedly installed at the end of the main pipeline 1, and a second flange 21 is fixedly installed at the fixed end of the bend 2. A sealing plate 3 is detachably installed at the connecting end of the bend 2. The first flange 11 and the second flange 21 are sealed and fixedly connected. The sealing plate 3 is threaded or plugged into the bend 2, and the sealing plate 3 is sealed to the bend 2.

[0029] With this design, when pipelines are needed, the sealing plate can be quickly removed and the corresponding pipelines can be installed and connected. This improves the connection speed of pipelines, reduces the labor intensity of workers, and improves the efficiency of pipeline cleaning and purging.

[0030] Furthermore, a protruding ring 22 is fixedly provided at the connecting end of the bend 2, and a snap-fit ​​handle 4 is provided on the sealing plate 3 to limit and cooperate with the protruding ring 22. The snap-fit ​​handle 4 is provided with a snap-fit ​​part 41, and the protruding ring 22 is sandwiched between the sealing plate 3 and the snap-fit ​​part 41.

[0031] This design achieves the purpose of fixing the sealing plate 3 to the bend 2.

[0032] Furthermore, the snap-fit ​​handle 4 is rotatably connected to the sealing plate 3, and a limiting component is provided between the snap-fit ​​handle 4 and the sealing plate 3 to limit the snap-fit ​​part 41 to the snap-fit ​​position.

[0033] This design ensures the secure fixing of the sealing plate 3.

[0034] Furthermore, the limiting component includes a tension spring 5 disposed between the sealing plate 3 and the snap-fit ​​handle 4, and the tension spring 5 is disposed between the rotating shaft of the snap-fit ​​handle 4 and the snap-fit ​​part 41.

[0035] Furthermore, the convex ring 22 is provided with a protrusion 23 that limits and cooperates with the snap-fit ​​portion 41.

[0036] With this design, the protrusion 23 can play a load-bearing role and prevent the sealing plate 3 from falling.

[0037] Furthermore, the bent pipe 2 is fixedly provided with a support platform 24, which is used to temporarily place the sealing plate 3 when the bent pipe 2 is working.

[0038] Furthermore, the support platform 24 is provided with a through hole 25 through which the snap-fit ​​handle 4 passes.

[0039] Furthermore, a pressure relief pipe 6 is provided on the side wall of the bend 2, and a pressure relief valve 61 is provided on the pressure relief pipe 6 to control its opening and closing.

[0040] Furthermore, the pressure relief port of the pressure relief pipe 6 is positioned downwards.

[0041] This design reduces safety risks compared to having the pressure relief vent facing other areas.

[0042] Furthermore, a sealing ring 7 is fixedly provided at the end of the convex ring 22.

[0043] This design improves sealing performance.

[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A pipeline connection device, characterized in that, The device includes a main pipe (1) that is fixedly installed and a bend (2) that is fixedly connected to the main pipe (1). A first flange (11) is fixedly installed at the end of the main pipe (1), and a second flange (21) is fixedly installed at the fixed end of the bend (2). A sealing plate (3) is detachably installed at the connecting end of the bend (2). The first flange (11) and the second flange (21) are sealed and fixedly connected. The sealing plate (3) is threaded or plugged into the bend (2). The sealing plate (3) is sealed to the bend (2).

2. The pipeline connection device according to claim 1, characterized in that, The connecting end of the bend (2) is fixedly provided with a protruding ring (22), the sealing plate (3) is provided with a snap-fit ​​handle (4) that is limited and cooperates with the protruding ring (22), the snap-fit ​​handle (4) is provided with a snap-fit ​​part (41), and the protruding ring (22) is sandwiched between the sealing plate (3) and the snap-fit ​​part (41).

3. The pipeline connection device according to claim 2, characterized in that, The snap-fit ​​handle (4) is rotatably connected to the sealing plate (3), and a limiting component is provided between the snap-fit ​​handle (4) and the sealing plate (3) to limit the snap-fit ​​part (41) to the snap-fit ​​position.

4. The pipeline connection device according to claim 3, characterized in that, The limiting component includes a tension spring (5) disposed between the sealing plate (3) and the snap-fit ​​handle (4), the tension spring (5) being disposed between the pivot of the snap-fit ​​handle (4) and the snap-fit ​​part (41).

5. The pipeline connection device according to claim 4, characterized in that, The protruding ring (22) is provided with a protrusion (23) that is limited and cooperates with the snap-fit ​​part (41).

6. The pipeline connection device according to claim 2, characterized in that, The bend (2) is fixedly provided with a support platform (24), which is used to temporarily place the sealing plate (3) when the bend (2) is working.

7. The pipeline connection device according to claim 6, characterized in that, The support platform (24) is provided with a through hole (25) through which the snap-fit ​​handle (4) passes.

8. The pipeline connection device according to claim 1, characterized in that, The side wall of the bend (2) is provided with a pressure relief pipe (6), and the pressure relief pipe (6) is provided with a pressure relief valve (61) to control its opening and closing.

9. The pipeline connection device according to claim 8, characterized in that, The pressure relief port of the pressure relief pipe (6) is set downward.

10. The pipeline connection device according to claim 2, characterized in that, A sealing ring (7) is fixedly provided at the end of the convex ring (22).

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