Connecting piece for two-way connection of corrugated pipes

Abstract

The utility model discloses a connecting piece for bidirectionally connecting corrugated pipes in the field of connecting pieces, which comprises a pipe body and a pipeline, a built-in pipe is fixedly arranged in the pipe body, an arc-shaped limiting block is arranged close to the built-in pipe, a support block is fixedly arranged in the pipe body, a metal elastic sheet is fixedly arranged on the side surface of the built-in pipe, and the metal elastic sheet is fixedly connected with the pipeline. The bottoms of the metal elastic pieces make contact with the arc-shaped limiting blocks, the supporting blocks are fixedly provided with threaded pipes, and a plurality of threads are arranged in the threaded pipes. According to the connecting piece for bi-directionally connecting the corrugated pipes, the built-in pipe, the arc-shaped limiting blocks and the metal elastic pieces are arranged, so that the connecting stability of the corrugated pipes can be guaranteed, and after the corrugated pipes are inserted into the built-in pipe, the metal elastic pieces are extruded by the corrugated pipes to be elastically deformed; and therefore, the corrugated pipe is clamped by the metal elastic sheet, and the corrugated pipe is clamped more stably.

Description

Technical Field

[0001] The utility model relates to the field of connecting pieces, in particular to a connecting piece for bidirectionally connecting corrugated pipes. Background Art

[0002] A bellows is a tubular elastic tube, usually made of foldable corrugated sheets connected along the folding and stretching direction. The bellows has a cylindrical thin-walled corrugated shell with multiple transverse corrugations. It has good elasticity and can produce displacement under pressure, axial force, transverse force or bending moment. There are many types of bellows, including metal bellows, bellows expansion joints, corrugated heat exchange tubes, diaphragm membrane boxes, metal hoses, etc. They each have different characteristics and application scenarios. In practice, it is often encountered that two components are transitionally connected with a bellows, that is, two bellows are connected to achieve connectivity. Generally speaking, the joint used for bellows connection must have the function of converting and connecting threads and bellows, that is, a connector, which is used to connect multiple bellows.

[0003] The existing connectors also have the following defects: the existing connectors are usually composed of a connecting pipe and a flange inside the connecting pipe. When in use, the bellows is usually heated and softened by a welding machine, and then one end of the bellows is manually rotated and inserted directly into the flange, and the bellows is connected by direct insertion, while the other end is also connected by heating and softening the bellows with a welding machine, that is, the connector and the bellows are connected by hot melting. Although this connection method is simple to operate, the molten material will flow when the two are squeezed and fixed. In addition to flowing to the bellows, it is also difficult to connect. In addition to forming a circle of steps on the outside of the bellows, the water will also flow to the inside of the bellows to form a circle of annular structure. Since the connection is made by hot melt, after long-term use, the bellows on both sides are easily separated from the connector under the erosion of water flow, resulting in an unstable connection of the bellows. In addition, the annular structure formed on the inside of the bellows will block the flow of water, resulting in inconsistent pressure between the bellows and the connector, causing the water flow to exert pressure on the connection between the bellows and the connector for a long time, which can easily cause the bellows and the connector to burst, resulting in an unstable connection of the bellows and affecting the water flow. Utility Model Content

[0004] In order to overcome the deficiencies of the existing technical solutions, the utility model provides a connecting piece for bidirectionally connecting a corrugated pipe, which can effectively solve the technical problem that the existing connecting piece is unstable when connecting the bidirectional corrugated pipe.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a connecting piece for bidirectionally connecting a corrugated pipe, comprising a pipe body and a pipe, an inner pipe is fixedly arranged inside the pipe body, an arc-shaped limit block is arranged near the inner pipe, a support block is fixedly arranged inside the pipe body, a metal spring is fixedly arranged on the side of the inner pipe, the bottom of the metal spring is in contact with the arc-shaped limit block, a threaded pipe is fixedly arranged on the support block, and a plurality of threads are arranged inside the threaded pipe.

[0006] Furthermore, a rubber ring is sleeved on the outer surface of the built-in tube, and the cross section of the rubber ring is circular.

[0007] Furthermore, the bottom of the arc-shaped limit block is fixedly connected to the inner wall of the tube body.

[0008] Furthermore, the diameter of the rubber ring is larger than the diameter of the tube body.

[0009] Furthermore, the tube body and the built-in tube are an integrally formed structure.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is a connecting piece for bidirectionally connecting a bellows, which can ensure the stability of the connection of the bellows by setting an internal tube, an arc-shaped limit block and a metal spring sheet. When the bellows is inserted into the interior of the internal tube, the metal spring sheet is squeezed by the bellows so that the metal spring sheet undergoes elastic deformation, so that the bellows is clamped by the metal spring sheet, making the clamping of the bellows more stable. By setting a threaded tube, the bellows can be connected through the rotation of the thread to achieve a tight and firm connection, thereby greatly improving the stability of the bellows during connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic structural diagram of a connecting piece for bidirectionally connecting a corrugated pipe according to the utility model;

[0012] Figure 2 for Figure 1 A partial enlarged view of the middle part;

[0013] Figure 3 The utility model is a structural schematic diagram of a threaded pipe of a connecting piece for bidirectionally connecting a corrugated pipe.

[0014] Numbers in the figure:

[0015] 1-tube body; 2-internal tube; 3-pipe; 4-rubber ring; 5-arc limit block; 6-metal spring; 7-support block; 8-threaded tube; 9-thread. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1-Figure 3 As shown, a connector for bidirectionally connecting a corrugated pipe comprises a pipe body 1 and a pipe 3, wherein an internal built-in pipe 2 is fixedly arranged inside the pipe body 1, an arc-shaped limit block 5 is arranged near the internal built-in pipe 2, a support block 7 is fixedly arranged inside the pipe body 1, a metal spring 6 is fixedly arranged on the side of the internal built-in pipe 2, the bottom of the metal spring 6 is in contact with the arc-shaped limit block 5, a threaded pipe 8 is fixedly arranged on the support block 7, and a plurality of threads 9 are arranged inside the threaded pipe 8, and the threaded pipe 8 can make the corrugated pipe tightly connected by the rotation of the thread when connected. The outer surface of the built-in tube 2 is sleeved with a rubber ring 4, and the cross-section of the rubber ring 4 is circular. The rubber ring 4 can make the bellows and the rubber ring 4 fit tightly, effectively filling the possible tiny gaps, thereby enhancing the sealing and making the bellows connection tighter and firmer. The bottom of the arc-shaped limit block 5 is fixedly connected to the inner wall of the tube body 1. The diameter of the rubber ring 4 is larger than the diameter of the tube body 1. The tube body 1 and the built-in tube 2 are an integrally formed structure. The tube body 1 and the built-in tube 2 adopt an integrally formed structure, which reduces the seams inside the connector.

[0018] A connecting piece for a bidirectionally connected bellows in the present embodiment can ensure the stability of the bellows connection by providing an internal tube 2, an arc-shaped limit block 5 and a metal spring 6. When the bellows is inserted into the internal tube 2, the metal spring 6 is squeezed by the bellows so that the metal spring 6 undergoes elastic deformation, so that the bellows is clamped by the metal spring 6, making the clamping of the bellows more stable. By providing a threaded tube 8, the bellows can be tightly and firmly connected through the rotation of the thread when connected, thereby greatly improving the stability of the bellows during connection.

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A bidirectional connection bellows connector, comprising a tube body and a pipe, characterized in that: An internal tube is fixedly arranged inside the tube body, an arc-shaped limit block is arranged near the internal tube, a support block is fixedly arranged inside the tube body, a metal spring is fixedly arranged on the side of the internal tube, the bottom of the metal spring is in contact with the arc-shaped limit block, a threaded tube is fixedly arranged on the support block, and a plurality of threads are arranged inside the threaded tube.

2. A bidirectional connection bellows connector according to claim 1, characterized in that: The outer surface of the built-in tube is sleeved with a rubber ring, and the cross section of the rubber ring is circular.

3. A bidirectional connection bellows connector according to claim 1, characterized in that: The bottom of the arc-shaped limiting block is fixedly connected to the inner wall of the tube body.

4. A bidirectional connecting bellows connector according to claim 2, characterized in that: The diameter of the rubber ring is greater than the diameter of the tube body.

5. A bidirectional connecting bellows connector according to any one of claims 1 to 4, characterized in that: The tube body and the built-in tube are an integrally formed structure.

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