Connecting device of drainage pipe

Abstract

The utility model provides a connecting device of a drain pipe, and belongs to the technical field of drain pipes. The problem that existing assembling is inconvenient is solved. The connecting device of the drain pipe comprises a plurality of pipe bodies and is characterized in that an elastic connecting unit which enables the two adjacent pipe bodies to be connected and has elasticity is arranged between the two adjacent pipe bodies. The utility model has the advantage of being convenient to assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of drainage pipes and relates to a connection device for drainage pipes. Background Art

[0002] When a house is being built, the construction site needs to use liquids for coordinated operations, cleaning, cooling, etc. Therefore, they will be discharged after use. If they are not cleaned, liquid accumulation may occur, resulting in property loss. Currently, the cleaning method is generally carried out through drain pipes. Due to the complex environment of the construction site, a large number of curved pipes and straight pipes are required, which leads to an increase in the cost of use. At the same time, the assembly and connection are relatively cumbersome, which affects the subsequent start-up efficiency. Summary of the invention

[0003] The purpose of the utility model is to provide a connecting device which reduces the use cost and is easy to assemble in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a connection device for a drainage pipe, comprising a plurality of pipe bodies, characterized in that an elastic connection unit is provided between the two adjacent pipe bodies to connect them and has elasticity.

[0005] In the above-mentioned connection device for a drainage pipe, the elastic connection unit is composed of a bellows and two assembly rings. The bellows is hollow. The two assembly rings are arranged at the two ends of the bellows and connected thereto. The side walls of the bellows at the two ends are provided with convex ring portions which protrude radially outward and fit with the corresponding assembly rings.

[0006] In the above-mentioned connection device for drainage pipes, the convex ring portion is provided with a sealing protrusion which is connected thereto and embedded in the relative assembly ring and serves to enhance the sealing performance.

[0007] In the above-mentioned connection device for a drainage pipe, a convex shaft portion which protrudes axially outward and slidably cooperates with the above-mentioned convex ring portion is provided on the outer end face of the assembly ring one, and an assembly ring two which is connected to it and is convenient for connection and assembly with other pipe fittings is provided on the convex ring portion, and a movable joint unit is provided between the assembly ring two and the convex shaft portion to enable them to be movably connected.

[0008] In the above-mentioned connection device for drainage pipes, the inner wall of the second assembly ring is arranged in a multi-step structure.

[0009] In the above-mentioned connection device for a drainage pipe, the movable joint unit is composed of a plurality of balls, and the side walls where the convex shaft portion and the second assembly ring are in contact are both provided with placement grooves for placing the balls, and the outer side wall of the second assembly ring located at the placement groove is provided with an assembly hole connected to the placement groove and convenient for the installation of the balls, and the second assembly ring is provided with a sealing cover at the opening of the assembly hole.

[0010] Compared with the prior art, the connection device of the drain pipe has the following advantages:

[0011] 1. An elastic connecting unit is provided between two adjacent pipe bodies to connect them. The above structure is convenient for connection and assembly and reduces the use of bent pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cross-sectional structure of the connection device of the drainage pipe.

[0013] In the figure, 1, tube body; 2, bellows; 3, assembly ring 1; 4, convex ring portion; 5, sealing protrusion; 6, convex shaft portion; 7, assembly ring 2; 8, ball bearing; 9, sealing cover. DETAILED DESCRIPTION

[0014] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0015] like Figure 1As shown, the connection device of the drainage pipe comprises a plurality of pipe bodies 1, wherein an elastic connection unit is arranged between two adjacent pipe bodies 1 to connect them, wherein the elastic connection unit is composed of a bellows 2 capable of stretching and deflecting and two assembly rings 3, wherein the bellows 2 is hollow, wherein the two assembly rings 3 are arranged at the two ends of the bellows 2 and connected thereto, wherein the side walls of the bellows 2 at the two ends are provided with convex ring portions 4 which protrude radially outward and fit with the corresponding assembly rings 3, wherein the outer end surface of the assembly ring 3 is provided with a convex shaft portion 6 which protrudes axially outward and slidably fits with the convex ring portion 4, wherein the convex ring portion 4 is provided with an assembly ring 2 7 which is connected thereto and is convenient for connection and assembly with other pipe fittings, and the assembly ring 2 7 and the convex shaft portion 6 are connected to each other and are ... 6 is provided with a movable joint unit to enable them to be movably connected, a connecting thread is provided on the outer end of the assembly ring 7, and the inner wall of the assembly ring 7 is arranged in a multi-step stepped structure. When the assembly ring 7 is assembled with the convex shaft part 6, the convex shaft part 6 and the stepped surface of the assembly ring 7 are in conflict, and a sealing ring can be arranged between the convex shaft part 6 and the stepped surface. The movable joint unit is composed of a plurality of balls 8, and the side walls where the convex shaft part 6 and the assembly ring 27 are in contact are provided with placement grooves for placing the balls 8. The two placement grooves are assembled by the convex shaft part 6 and the assembly ring 27 to form a raceway, and the outer side wall of the assembly ring 27 located at the placement groove is provided with an assembly hole connected to the placement groove and convenient for the installation of the balls 8, and the assembly ring 27 is provided with a sealing cover 9 connected to it at the opening of the assembly hole.

[0016] To elaborate further, in order to ensure the sealing of the connection, the convex ring portion 4 is provided with a sealing protrusion 5 which is connected to it and embedded in the relative assembly ring 3 and serves to enhance the sealing. A connecting ring connected to the assembly ring 3 is sleeved on the outer peripheral wall of the bellows 2 located at the assembly ring 3, and the connecting ring is embedded in the bellows 2.

[0017] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0018] Although the terms such as tube body 1, bellows 2, assembly ring 1 3, convex ring portion 4, sealing protrusion 5, convex shaft portion 6, assembly ring 2 7, ball 8, sealing cover 9 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A connection device for a drainage pipe, comprising a plurality of pipe bodies (1), characterized in that: An elastic connection unit is provided between the two adjacent tube bodies (1) to connect them. The elastic connection unit is composed of a bellows (2) and two assembly rings (3). The bellows (2) is hollow. The two assembly rings (3) are arranged at the two ends of the bellows (2) and connected thereto. The side walls of the bellows (2) at the two ends are provided with convex ring parts (4) which protrude radially outward and fit with the corresponding assembly rings (3). The outer end surface of the assembly ring (3) is provided with a convex shaft part (6) which protrudes axially outward and slidably fits with the convex ring part (4). The convex ring portion (4) is provided with an assembly ring 2 (7) connected thereto and convenient for connection and assembly with other pipe fittings. A movable joint unit is provided between the assembly ring 2 (7) and the convex shaft portion (6) to enable them to be movably connected. The movable joint unit is composed of a plurality of balls (8). The side walls where the convex shaft portion (6) and the assembly ring 2 (7) are in contact are provided with placement grooves for placing the balls (8). The outer side wall of the assembly ring 2 (7) located at the placement groove is provided with an assembly hole connected to the placement groove and convenient for installing the balls (8). The assembly ring 2 (7) is provided with a sealing cover (9) at the opening of the assembly hole.

2. A connection device for a drainage pipe according to claim 1, characterized in that: The convex ring portion (4) is provided with a sealing protrusion (5) which is connected thereto and embedded in the relative assembly ring (3) and serves to enhance the sealing performance.

3. A connection device for a drainage pipe according to claim 1, characterized in that: The inner wall of the second assembly ring (7) is arranged in a multi-step structure.

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