Connecting device for connecting pipelines with different diameters

Abstract

The utility model discloses a connecting device for connecting pipelines with different diameters, which relates to the technical field of pipeline connection and comprises a connecting piece, a large-diameter pipe fixing ring is rotatably mounted on the outer ring of the connecting piece, a small-diameter pipe fixing ring is rotatably mounted on the inner ring of the connecting piece, a large-diameter pipe is arranged on the outer side of the large-diameter pipe fixing ring, and a small-diameter pipe is arranged on the outer side of the small-diameter pipe fixing ring. A small-diameter tube is arranged on the inner side of the small-diameter tube fixing ring; according to the utility model, the fixing rings with different sizes can be selected according to different pipe diameters to ensure that the fixing rings are attached to the inner walls of corresponding pipes, the flexibility of the device is improved through the combination of the various fixing rings, and the pipelines with different pipe diameters can be conveniently connected.

Description

Technical Field

[0001] This utility model belongs to the field of pipe connection technology, specifically, it relates to a connecting device for connecting pipes of different diameters. Background Technology

[0002] Pipelines can transport gases, liquids, or solid particles and are widely used in various industrial and agricultural fields, including the transportation of chemical media, sewage collection and transportation pipelines, drinking water transportation pipelines, and heat energy transportation pipelines. In engineering applications, different sizes of pipes are required. When connecting pipes of different diameters, reducers are generally used. The reducers need to be welded to the pipes at both ends or connected by flanges.

[0003] Chinese Patent Publication No. CN218762021U discloses a reducing pipe connection device, including: a thin pipe section, a thick pipe section, and a fixing member; the thin pipe section includes a thin pipe inlet and a thin pipe outlet, and the thick pipe section includes a thick pipe inlet and a thick pipe outlet, the outer diameter of the thin pipe outlet is the same as the outer diameter of the thick pipe inlet, and they are matched and connected; the fixing member is sleeved at the connection between the thin pipe outlet and the thick pipe inlet, and is used to connect and fix the thin pipe section and the thick pipe section; the above-mentioned prior art can generally only be used to connect pipes of a specific diameter, and the applicability of the device is relatively general.

[0004] In view of this, this utility model is hereby proposed. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a connecting device for connecting reducing pipes, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A connecting device for connecting reducing pipes includes: a connector, characterized in that the inner and outer rings of the connector are threaded, a large-diameter pipe fixing ring is rotatably mounted on the outer ring of the connector, a small-diameter pipe fixing ring is rotatably mounted on the inner ring of the connector, a large-diameter pipe is disposed on the outer side of the large-diameter pipe fixing ring, and a small-diameter pipe is disposed on the inner side of the small-diameter pipe fixing ring.

[0008] Optionally, a hook is provided on one side of the large-diameter pipe fixing ring and the small-diameter pipe fixing ring.

[0009] Optionally, multiple sets of the large-diameter pipe fixing ring and the small-diameter pipe fixing ring are provided, and the outer diameter of the large-diameter pipe fixing ring and the inner diameter of the small-diameter pipe fixing ring are different.

[0010] Optionally, both the inner and outer rings of the connector are provided with a stop block on one side.

[0011] Optionally, a sealing ring is provided on the surface of the stop block.

[0012] Optionally, the hook may be made of a metal material with good ductility.

[0013] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0014] This connecting device for reducing pipe diameters uses internal and external threads of the connector to connect a fixing ring. The corresponding fixing ring fixes the inner and outer pipe diameters, thereby allowing the smaller diameter pipe to be inserted into the larger diameter pipe, thus achieving the connection of two different pipe diameters.

[0015] This reducing pipe connection device uses threads to rotate and fix the retaining ring and the connector. Different sizes of retaining rings can be selected for different pipe diameters to ensure a close fit to the inner wall of the corresponding pipe. The combination of multiple retaining rings enhances the flexibility of the device and facilitates the connection of pipes of various diameters.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is an exploded view of the fixing ring and connecting parts of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Connecting parts; 101. Stop block; 2. Large diameter pipe retaining ring; 3. Small diameter pipe retaining ring; 4. Large diameter pipe; 5. Small diameter pipe; 6. Clip; 7. Sealing ring.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Please see Figure 1-3As shown in the figure, this embodiment provides a connecting device for connecting reducing pipes, including: connector 1.

[0026] like Figure 1-3 As shown, in this embodiment, the inner and outer rings of the connector 1 are threaded. A large-diameter pipe fixing ring 2 is rotatably mounted on the outer ring of the connector 1, and a small-diameter pipe fixing ring 3 is rotatably mounted on the inner ring of the connector 1. A large-diameter pipe 4 is disposed on the outer side of the large-diameter pipe fixing ring 2, and a small-diameter pipe 5 is disposed on the inner side of the small-diameter pipe fixing ring 3. The connector 1 is annular and has threads on both its inner and outer walls. The outer wall of the large-diameter pipe fixing ring 2 fits against the inner wall of the large-diameter pipe 4, and the inner wall of the large-diameter pipe fixing ring 2 has threads that engage with the threads on the outer ring of the connector 1. The large-diameter pipe fixing ring 2 is installed on the outer ring of the connector 1 through two threaded engagements. Similarly, the outer thread of the small-diameter pipe fixing ring 3 engages with the inner thread on the inner ring of the connector 1 to install the small-diameter pipe fixing ring 3 on the connector 1. The small-diameter pipe 5 is inserted into the center of the small-diameter pipe fixing ring 3, and its outer wall is fixed to the inner wall of the small-diameter pipe fixing ring 3, thereby realizing the fixed support of the pipe by the corresponding fixing ring. The connector 1 fixes the two fixing rings to each other, and finally fixes the large-diameter pipe 4 and the small-diameter pipe 5 to each other.

[0027] like Figure 1-3 As shown, in this embodiment, hooks 6 are provided on one side of the large-diameter pipe fixing ring 2 and the small-diameter pipe fixing ring 3. The hooks 6 are circumferentially distributed on the corresponding fixing ring side. The hooks 6 of the large-diameter pipe fixing ring 2 are closer to the outer direction of the large-diameter pipe 4. By bending inward, they can hook onto the large-diameter pipe 4, making the connection between the large-diameter pipe fixing ring 2 and the large-diameter pipe 4 more stable and less likely to fall off. Similarly, the hooks 6 on the small-diameter pipe fixing ring 3 are closer to the inner direction of the small-diameter pipe 5 to hook onto the small-diameter pipe 5. The two hooks 6, together with the threaded connector 1, make the whole device more stable.

[0028] like Figure 1-3 As shown, in this embodiment, multiple sets of large-diameter pipe fixing rings 2 and small-diameter pipe fixing rings 3 are provided. The outer diameter of the large-diameter pipe fixing ring 2 and the inner diameter of the small-diameter pipe fixing ring 3 are different. For pipes of different diameters, multiple sets of corresponding fixing rings are provided. The main difference is that the size of the fixing rings that fit the pipes are different. Different sizes of fixing rings are selected for pipes of different diameters to ensure that the fixing rings can fit the pipes for support, thus making it suitable for connecting pipes of various diameters.

[0029] like Figure 1-3 As shown, in this embodiment, the inner and outer rings of the connector 1 are both provided with a stop block 101 near one side; wherein, the stop block 101 is located at the end of the corresponding fixed ring, and the corresponding fixed ring is rotated until it fits against the stop block 101 to limit the fixed ring and prevent the fixed ring from rotating beyond its stroke.

[0030] like Figure 1-3As shown, the surface of the stop 101 in this embodiment is provided with a sealing ring 7; wherein, the sealing ring 7 is bonded and fixed between the fixing ring and the stop 101 to prevent water from flowing into the threads between the fixing ring and the connector 1 from the inside, and to protect the connecting threads from rusting when immersed in water.

[0031] like Figure 1-3 As shown, the hook 6 in this embodiment uses a metal material with good ductility; wherein, the hook 6 hooks onto the corresponding pipe by bending, and during installation, the hook 6 is squeezed tightly with tools such as pliers to make it completely fit onto the pipe, thereby strengthening the fixing effect of the fixing ring on the pipe.

[0032] Working principle: First, select the appropriate size of the large-diameter pipe fixing ring 2 and the small-diameter pipe fixing ring 3 according to the actual pipe diameters of the large-diameter pipe 4 and the small-diameter pipe 5. First, rotate the small-diameter pipe fixing ring 3 and the large-diameter pipe fixing ring 2 to the corresponding positions on the connector 1. Insert the small-diameter pipe 5 into the small-diameter pipe fixing ring 3, and let the hook 6 of the small-diameter pipe fixing ring 3 fit on the pipe of the small-diameter pipe 5. Use pliers to flatten the hook 6 to fix it. Then, insert the installed large-diameter pipe fixing ring 3 along with the small-diameter pipe 5 into the large-diameter pipe 4. The hook 6 on the large-diameter pipe fixing ring 3 will lock onto the large-diameter pipe 4. Install the hook 6 to fix the connector 1 so that the small-diameter pipe 5 is fitted into the large-diameter pipe 4. For pipes with different diameters, select the fixing ring of different sizes.

[0033] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A connecting device for connecting reducing pipes, comprising: The connector (1) is characterized in that the inner and outer rings of the connector (1) are threaded, a large-diameter pipe fixing ring (2) is rotatably installed on the outer ring of the connector (1), a small-diameter pipe fixing ring (3) is rotatably installed on the inner ring of the connector (1), a large-diameter pipe (4) is provided on the outside of the large-diameter pipe fixing ring (2), and a small-diameter pipe (5) is provided on the inside of the small-diameter pipe fixing ring (3).

2. The connecting device for connecting reducing pipes according to claim 1, characterized in that, The large-diameter pipe fixing ring (2) and the small-diameter pipe fixing ring (3) are provided with hooks (6) on one side.

3. The connecting device for connecting reducing pipes according to claim 1, characterized in that, Multiple sets of large-diameter pipe fixing rings (2) and small-diameter pipe fixing rings (3) are provided, and the outer diameter of the large-diameter pipe fixing ring (2) and the inner diameter of the small-diameter pipe fixing ring (3) are different.

4. A connecting device for connecting reducing pipes according to claim 1, characterized in that, The connector (1) has a stop (101) on one side of both the inner and outer rings.

5. A connecting device for connecting reducing pipes according to claim 4, characterized in that, A sealing ring (7) is provided on the surface of the stop (101).

6. A connecting device for connecting reducing pipes according to claim 2, characterized in that, The hook (6) is made of a metal material with good ductility.

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