Drainage pipeline connecting structure

Abstract

The utility model discloses a drainage pipeline connecting structure which comprises a butt joint pipe and two connecting pipes, and the two connecting pipes are connected to the two ends of the butt joint pipe through positioning connecting structures respectively. The positioning connection structure comprises a first flange rotationally connected to the end of the butt joint pipe, a second flange fixedly connected to the connecting pipe, a clamping block fixedly arranged on the outer wall of the connecting pipe and a limiting sliding groove formed in the inner wall of the first flange, and the first flange and the second flange are matched and can be fixedly connected through a bolt. The clamping blocks can be embedded into the limiting sliding grooves in a sliding mode, and when the clamping blocks make contact with the end faces of the inner sides of the limiting sliding grooves, the hole sites in the first flange and the hole sites in the second flange are aligned one by one. The butt-joint pipe and the connecting pipe are connected through the first flange and the second flange, the butt-joint pipe and the connecting pipe are more durable, meanwhile, the clamping blocks and the limiting sliding grooves are arranged, an operator can conveniently and rapidly align flange hole sites, and rapid installation is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of drainage pipe connection, and particularly relates to a drainage pipe connection structure. Background Art

[0002] A drainage pipe refers to a system composed of pipes and their auxiliary facilities for collecting and discharging sewage, wastewater, and rainwater. These pipes include main pipes, branch pipes, and pipes leading to treatment plants. Whether built on streets or other places, as long as they play a drainage role, they should be regarded as drainage pipes. Drainage pipes are an important part of urban infrastructure, responsible for receiving, transporting, and purifying rainwater and sewage from cities, factories, and living areas, including industrial sewage, domestic sewage, etc., ensuring the smooth discharge of sewage and rainwater, preventing urban waterlogging, and protecting the environment and public health at the same time.

[0003] In a patent document with the publication number: CN2806942Y, a drainage pipe connection structure is disclosed. Among them, the drainage pipe is composed of UPVC to form a circular pipe inner wall, and the outer layer is a protective layer. Two adjacent drainage pipes are connected through a connector, and the connector is adhesively bonded to the inner wall of the drainage pipe through the circular outer wall of the adapter sleeve. This structure connects the drainage pipes by adhesion. The disadvantage of this method is insufficient durability. During long-term use, the adhesion is likely to become loose, and it is more difficult to maintain the pipes. In some other prior arts, the drainage pipes are connected by flange connection, which has stronger durability and is also convenient for maintenance. However, when docking the flanges, it is necessary to align the flange holes one by one and then insert the bolts, and the entire installation process is time-consuming and laborious. Therefore, it is necessary to design a drainage pipe connection structure that is both convenient to install and durable. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a drainage pipe connection structure. The connection between the butt pipe and the connecting pipe is realized through the first flange and the second flange, which is more durable. At the same time, a clamping block and a limiting sliding groove are provided to facilitate the operator to quickly align the flange holes and install quickly, solving the problems described in the background art.

[0005] The technical solution adopted by the utility model is a drainage pipe connection structure, which includes a butt pipe and two connecting pipes. The two connecting pipes are respectively connected to both ends of the butt pipe through a positioning connection structure;

[0006] The positioning and connecting structure includes a first flange rotatably connected to the end of the docking pipe, a second flange fixedly connected to the connecting pipe, a clamping block fixedly arranged on the outer wall of the connecting pipe, and a limiting sliding groove formed on the inner wall of the first flange. The first flange is adapted to the second flange and can be fixedly connected by bolts. The clamping block can slide into the limiting sliding groove, and when the clamping block contacts the inner end face of the limiting sliding groove, the hole positions on the first flange and the second flange are aligned one by one.

[0007] Further, there are two clamping blocks on each connecting pipe, which are symmetrically arranged, and there are two limiting sliding grooves on each first flange, which are centrosymmetrically arranged.

[0008] Further, the limiting sliding groove includes an inlet section and a limiting section. The inlet section and the limiting section are connected in an L shape. The inlet section extends from the inside of the first flange to the outer end face of the first flange. The limiting section is connected to the inner end of the inlet section, and the shape and size of the limiting section are adapted to the clamping block.

[0009] Further, sealing rings are arranged inside both ends of the docking pipe, and a gasket is arranged on the end face of the connecting pipe close to the clamping block.

[0010] Further, a control valve is arranged in the middle of the docking pipe.

[0011] The beneficial effects of the present utility model are as follows:

[0012] In the present utility model, the pipeline connection is formed by connecting two connecting pipes to both ends of the docking pipe. At the same time, when one end of the connecting pipe is inserted into the inside of the first flange, the first flange is rotated so that the clamping block is inserted into the inside of the limiting sliding groove. After the first flange and the second flange are attached, the first flange is rotated counterclockwise until the clamping block is stuck in the inside of the limiting sliding groove and cannot rotate. At this time, the hole positions on the first flange and the second flange are aligned one by one. It only needs to place the first flange and the second flange on the ground and insert the screw rods one by one for tightening and fixing, without the need for construction workers to lift the two flanges and spend a lot of time adjusting the hole positions, thus making the connection of the drainage pipeline more convenient and labor-saving. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 It is a schematic diagram of the installation structure of the first flange of the present utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the docking pipe of the present utility model;

[0016] Markings in the figure: 1, docking pipe; 2, control valve; 3, first flange; 31, limit sliding groove; 311, inlet section; 312, limit section; 32, sealing ring; 4, connecting pipe; 41, second flange; 42, gasket; 43, clamping block. Detailed implementation mode

[0017] In order to make the purpose, technical solution and advantages of the present utility model clearer and more understandable, the technical solution of the present utility model will be further described in detail below in conjunction with the attached drawings in the embodiments of the present utility model.

[0018] Refer to Figures 1 to 3 , a drainage pipe connection structure of the present utility model includes a docking pipe 1 and two connecting pipes 4. The two connecting pipes 4 are respectively connected to both ends of the docking pipe 1 through a positioning connection structure;

[0019] The positioning connection structure includes a first flange 3 rotatably connected to the end of the docking pipe 1, a second flange 41 fixedly connected to the connecting pipe 4, a clamping block 43 fixedly arranged on the outer wall of the connecting pipe 4, and a limit sliding groove 31 opened on the inner wall of the first flange 3. The first flange 3 is adapted to the second flange 41 and can be fixedly connected by bolts. The clamping block 43 can slide into the limit sliding groove 31, and when the clamping block 43 contacts the inner end face of the limit sliding groove 31, the hole positions on the first flange 3 and the second flange 41 are aligned one by one.

[0020] There are two clamping blocks 43 on each connecting pipe 4 and they are symmetrically arranged. There are two limit sliding grooves 31 on each first flange 3 and they are centrosymmetrically arranged. The limit sliding groove 31 includes an inlet section 311 and a limit section 312. The inlet section 311 is connected to the limit section 312 in an L shape. The inlet section 311 extends from the inside of the first flange 3 to the outer end face of the first flange 3. The limit section 312 is connected to the inner end of the inlet section 311. The shape and size of the limit section 312 are adapted to the clamping block 43.

[0021] When the drainage pipe connection structure is in use, the two connecting pipes 4 are connected to both ends of the docking pipe 1 to form a pipe connection. At the same time, after one end of the connecting pipe 4 is inserted into the first flange 3, rotate the first flange 3 until the clamping block 43 cannot rotate when it is stuck on the inner end face of the limit section. At this time, the hole positions on the first flange 3 and the second flange 41 are aligned one by one. It only needs to place the first flange 3 and the second flange 41 on the ground and insert bolts one by one for tightening and fixing, without the need for construction workers to lift the two flanges and spend a lot of time adjusting the hole positions, thus making the connection of the drainage pipe more convenient and labor-saving.

[0022] Specifically, when inserting the connecting pipe 4 into the docking pipe 1, first, the end of the connecting pipe 4 near the clamping block 43 faces the docking pipe 1, aligning the clamping block 43 with the entrance section 311 of the limit sliding groove 31 on the first flange 3 and then inserting it until the clamping block 43 moves to the innermost side of the entrance section 311. Then, rotate the first flange 3 so that the clamping block 43 slides in the limit section 312 until the clamping block 43 contacts the inner end face of the limit section 312. At this time, interference occurs between the clamping block 4 and the inner end face of the limit section 312, and the first flange 3 cannot be rotated further. The hole positions on the second flange 41 and the first flange 3 are also exactly aligned. Subsequently, the first flange 3 and the second flange 41 can be connected by bolts.

[0023] Furthermore, sealing rings 32 are provided inside both ends of the docking pipe 1, and a sealing gasket 42 is provided on the end face of the connecting pipe 4 near the clamping block 43. When one end of the connecting pipe 4 is inserted into the inside of the docking pipe 1, the sealing gasket 42 fits tightly with the sealing ring 32, achieving the effect of sealing and preventing leakage.

[0024] Furthermore, a control valve 2 is provided in the middle of the docking pipe 1. The control valve 2 is equipped with a handwheel and is a manual control valve. After rotating it clockwise, the internal pipeline of the docking pipe 1 can be disconnected. Thus, when repairing the connection of the drainage pipeline, the pipeline can be disconnected through the control valve 2, facilitating the repair.

[0025] The content not described in detail in this specification belongs to the well-known prior art of those skilled in the art. It should also be noted that in this specification, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without further limitations, the element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A drainage pipe connection structure, characterized in that, It includes a docking pipe and two connecting pipes. Both of the two connecting pipes are respectively arranged at two ends of the docking pipe through a positioning connection structure; The positioning connection structure includes a first flange rotatably arranged at the end of the docking pipe, a second flange fixedly arranged on the connecting pipe, a clamping block fixedly arranged on the outer wall of the connecting pipe, and a limiting sliding groove opened on the inner wall of the first flange. The first flange is adapted to the second flange and can be fixedly connected by bolts. The clamping block can slide and be embedded into the limiting sliding groove, and when the clamping block contacts the inner end face of the limiting sliding groove, the hole positions on the first flange and the second flange are aligned one by one.

2. The drainage pipe connection structure according to claim 1, characterized in that, There are two clamping blocks on each connecting pipe and they are symmetrically arranged. There are two limiting sliding grooves on each first flange and they are centrosymmetrically arranged.

3. The drainage pipe connection structure according to claim 2, characterized in that, The limiting sliding groove includes an inlet section and a limiting section. The inlet section and the limiting section are connected in an L shape. The inlet section extends from the inside of the first flange to the outer end face of the first flange. The limiting section is connected to the inner end of the inlet section. The shape and size of the limiting section are adapted to the clamping block.

4. The drainage pipe connection structure according to claim 1, characterized in that Sealing rings are arranged inside both ends of the docking pipe, and a gasket is arranged on the end face of the connecting pipe close to the clamping block.

5. The drainage pipe connection structure according to claim 1, characterized in that, A control valve is arranged in the middle of the docking pipe.

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