Groove external thread pipe fitting with different diameters and same diameter

Abstract

The utility model relates to the technical field of pipe fittings, in particular to a groove external thread different-diameter and same-diameter pipe fitting, which comprises a main pipe, two ends of the main pipe are respectively connected with same-diameter pipes through connecting pieces, each same-diameter pipe is independently and rotatably mounted on the main pipe, and a different-diameter pipe is arranged at the inner end part of one same-diameter pipe and is arranged along the inside and the outside of the same-diameter pipe in a moving manner. The pipe fitting solves the problems that when two pipe bodies are connected through an existing pipe fitting, when the length of the pipe bodies is large, the pipe bodies need to be rotated to be in threaded connection with a groove pipe fitting, so that the pipe bodies need to be rotated, and time and labor are wasted; the problems that when pipe bodies are connected through an existing pipe fitting, when the calibers of the two pipe bodies are different, a connector needs to be connected, accessories are prone to being lost, and the assembling efficiency of the pipe fitting is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fittings, in particular to grooved external thread pipe fittings with different diameters and the same diameter. Background Art

[0002] The traditional flange connection and welding methods used in pipeline connection have the defects of complex installation, low efficiency, welding quality, safety, and environmental pollution. The development and application of grooved pipe fittings make complex pipeline connection projects simple, fast, efficient, reliable, safe, and environmentally friendly, and have become the first choice for liquid and gas pipeline connection. Although this technology was developed later in China than abroad, due to its advanced technology, it has been vigorously promoted by the country and quickly accepted by the domestic market. It has a wide range of applications in pipeline connections in the fields of fire protection, water supply and drainage, electricity, petroleum, chemical industry, subway, airport, tunnel, etc.

[0003] The grooved external threaded reducing (same diameter) pipe fittings are composed of threaded pipe ports, transition pipes, and grooved pipe ports. They are divided into two types. One is the same diameter pipe, whose threaded port and groove port have the same diameter, and are used for the installation of same diameter pipes where the pipeline changes from groove connection to threaded connection. The other is the reducing pipe, whose threaded port and groove port have different diameters. Generally, the groove port diameter is larger than the threaded port diameter, and is used for the reduction installation of large-diameter groove pipes to threaded ports and small-diameter pipes from groove connection to threaded connection. The threaded port is completed by tapping with a tapping machine or thread picking on a CNC lathe, and the groove port is realized by lathe groove processing.

[0004] As the existing devices are used, the shortcomings of the technology are gradually exposed, mainly in the following aspects:

[0005] First, when the existing pipe fittings are used to connect two pipe bodies, if the pipe body is long, the pipe body needs to be rotated to make it threadedly connected with the groove pipe fitting, which requires the pipe body to be rotated, which is time-consuming and labor-intensive and reduces assembly efficiency.

[0006] Second, when the existing pipe fittings are connected to the pipe bodies, when the diameters of the two pipe bodies are different, a connecting joint is required, which makes the accessories easy to be lost, thereby reducing the assembly efficiency of the pipe fittings.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] In view of the defects in the prior art, the utility model solves the problem that when the existing pipe fittings connect two pipe bodies, when the length of the pipe body is large, the pipe body needs to be rotated to make it threadedly connected with the groove pipe fitting, which requires rotating the pipe body, which is time-consuming and laborious; and when the existing pipe fittings connect two pipe bodies, when the diameters of the two pipe bodies are different, a connecting joint is required, which makes the accessories easy to lose, thereby reducing the assembly efficiency of the pipe fittings.

[0009] In order to solve the above problems, the utility model provides the following technical solutions:

[0010] The grooved outer thread reducing and same-diameter pipe fittings include a main pipe, both ends of which are respectively connected to same-diameter pipes by connecting pieces, each of which is independently rotatably installed on the main pipe, a reducing pipe is provided at the inner end of one of the same-diameter pipes, and the reducing pipe is arranged to move inside and outside the same-diameter pipe.

[0011] As an optimized solution, the connecting piece includes an inner step annular groove opened on the end of the main pipe, an outer step protrusion ring constrained in the inner step annular groove is fixedly connected to the end of the reducer, and an end cover is fixedly connected to the end of the main pipe, and the end cover limits the axial movement of the outer step protrusion ring.

[0012] As an optimized solution, a plurality of sealing rings are arranged in parallel between the outer step raised ring and the inner step ring groove.

[0013] As an optimized solution, a plurality of annular grooves are arranged in parallel along the axial direction on the outer wall of the outer stepped protrusion ring, and the sealing ring is arranged in the annular grooves.

[0014] As an optimized solution, a plurality of thread grooves are arranged around the end of the main pipe, and fixing holes matching the thread grooves are evenly distributed on the end cover. Bolts are inserted into the fixing holes, and the ends of the bolts are threadedly connected to the thread grooves.

[0015] As an optimized solution, a plurality of driving seats are circumferentially arranged on the outer wall of the same diameter tube.

[0016] As an optimized solution, a driving groove is provided on the driving seat.

[0017] As an optimized solution, an outer wall of the outer end of each of the same-diameter tubes is provided with an outer thread of the same-diameter tube.

[0018] As an optimized solution, the inner wall of the same-diameter pipe is provided with a same-diameter pipe inner thread, and the outer wall of the different-diameter pipe is provided with a different-diameter pipe outer thread matching the same-diameter pipe inner thread.

[0019] As an optimized solution, a reducer inner thread is further provided on the inner wall of the reducer.

[0020] As an optimized solution, a connecting groove is provided on the outer wall of each of the same-diameter tubes.

[0021] As an optimized solution, the connecting groove is located in the area between the outer thread of the same-diameter tube and the inner end of the same-diameter tube.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] By arranging the same-diameter pipe outer thread and the connecting groove on the outer wall of the same-diameter pipe, it is possible to select the same-diameter pipe outer thread to connect with the tank body, or select the connecting groove to connect with the pipe body using a coupling, according to the use scenario, so as to facilitate the selection of use according to the scenario and expand the scope of use;

[0024] The same diameter pipe and the main pipe are rotatably connected, so that the same diameter pipe can be rotated when connected to the pipe body to be assembled with the main pipe, thus overcoming the problem in the traditional technology that the pipe body is too long to be rotated.

[0025] By rotating and setting a reducer inside a pipe of the same diameter, the inner thread and the outer thread of the reducer can be used to connect to pipe bodies of different diameters. When the reducer is not in use, it can be screwed into the inside of the pipe of the same diameter for storage without being lost, thereby improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] In the figure: 1-main pipe; 2-same diameter pipe; 3-same diameter pipe outer thread; 4-connecting groove; 5-driving seat; 6-end cover; 7-inner step ring groove; 8-outer step raised ring; 9-sealing ring; 10-bolt; 11-same diameter pipe inner thread; 12-reducing diameter pipe outer thread; 13-reducing diameter pipe inner thread; 14-reducing diameter pipe. DETAILED DESCRIPTION

[0029] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0030] like Figure 1As shown, the grooved external thread reducing and same-diameter pipe fittings include a main pipe 1, both ends of which are respectively connected to same-diameter pipes 2 by connecting pieces, each of which is independently rotatably installed on the main pipe 1, and a reducing pipe 14 is provided at the inner end of one of the same-diameter pipes 2, and the reducing pipe 14 is arranged to move inside and outside the same-diameter pipe 2.

[0031] The connecting piece includes an inner step annular groove 7 formed on the end of the main pipe 1, an outer step raised ring 8 constrained in the inner step annular groove 7 is fixedly connected to the end of the reducer 14, and an end cover 6 is fixedly connected to the end of the main pipe 1 to limit the axial movement of the outer step raised ring 8.

[0032] A plurality of sealing rings 9 are arranged in parallel between the outer step protrusion ring 8 and the inner step ring groove 7 .

[0033] A plurality of annular grooves are arranged in parallel along the axial direction on the outer wall of the outer stepped protrusion ring 8, and the sealing ring 9 is arranged in the annular grooves.

[0034] The end of the main pipe 1 is surrounded by a plurality of thread grooves, and the end cover 6 is evenly provided with fixing holes matching the thread grooves. Bolts 10 are inserted into the fixing holes, and the ends of the bolts 10 are threadedly connected to the thread grooves.

[0035] A plurality of drive seats 5 are circumferentially arranged on the outer wall of the same diameter pipe 2 .

[0036] A driving groove is provided on the driving seat 5 , and a wrench can be inserted into the driving groove to twist the same-diameter pipe 2 to rotate.

[0037] A same-diameter tube outer thread 3 is provided on the outer wall of the outer end of each same-diameter tube 2 .

[0038] The inner wall of the same-diameter pipe 2 is provided with a same-diameter pipe inner thread 11 , and the outer wall of the different-diameter pipe 14 is provided with a different-diameter pipe outer thread 12 matching the same-diameter pipe inner thread 11 .

[0039] The inner wall of the reducer 14 is also provided with a reducer inner thread 13 .

[0040] A connecting groove 4 is provided on the outer wall of each isodiameter pipe 2 .

[0041] The connecting groove 4 is located in the area between the outer thread 3 of the same-diameter pipe and the inner end of the same-diameter pipe 2 .

[0042] The working principle of this device is:

[0043] By arranging the same-diameter pipe outer thread 3 and the connecting groove 4 on the outer wall of the same-diameter pipe 2, it is possible to select the same-diameter pipe outer thread 3 to be connected to the tank body, or to select the connecting groove 4 to be connected to the pipe body using a coupling according to the usage scenario, which is convenient for selecting the use according to the scenario and expanding the scope of use;

[0044] The same diameter pipe 2 is rotatably connected to the main pipe 1, so that the same diameter pipe 2 can be rotated when connected to the pipe body to be assembled with the main pipe 1, thus overcoming the problem in the traditional technology that the pipe body is too long and it is inconvenient to rotate the pipe body;

[0045] By rotating and setting the reducer 14 inside the same-diameter pipe 2, the reducer inner thread 13 and the reducer outer thread 12 can be used to connect to pipes of different diameters. When the reducer 14 is not in use, it can be screwed into the same-diameter pipe 2 for storage, and it will not be lost, thereby improving assembly efficiency.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A grooved outer thread pipe with different diameters and the same diameter (2), characterized in that: The invention comprises a main pipe (1), the two ends of the main pipe (1) are respectively connected to pipes of the same diameter (2) by means of connecting pieces, each of the pipes of the same diameter (2) is independently rotatably mounted on the main pipe (1), a reducing pipe (14) is provided at the inner end of one of the pipes of the same diameter (2), and the reducing pipe (14) is arranged to move inside and outside the pipe of the same diameter (2).

2. The grooved outer thread pipe with different diameters and same diameters (2) according to claim 1, characterized in that: The connecting piece comprises an inner step annular groove (7) formed on the end of the main pipe (1); an outer step raised ring (8) constrained in the inner step annular groove (7) is fixedly connected to the end of the reducer (14); an end cover (6) is fixedly connected to the end of the main pipe (1); the end cover (6) limits the axial movement of the outer step raised ring (8).

3. The grooved outer thread pipe (2) with different diameters and same diameters according to claim 2, characterized in that: A plurality of sealing rings (9) are arranged in parallel between the outer step raised ring (8) and the inner step ring groove (7).

4. The grooved outer thread pipe (2) with different diameters and same diameters according to claim 3, characterized in that: A plurality of annular grooves are arranged in parallel along the axial direction on the outer wall of the outer stepped protruding ring (8), and a sealing ring (9) is arranged in the annular grooves.

5. The grooved outer thread pipe (2) with different diameters and same diameters according to claim 4, characterized in that: The end of the main pipe (1) is surrounded by a plurality of thread grooves, and the end cover (6) is evenly distributed with fixing holes matching the thread grooves. Bolts (10) are inserted into the fixing holes, and the ends of the bolts (10) are threadedly connected to the thread grooves.

6. The grooved outer thread reducing and same diameter pipe (2) according to claim 5, characterized in that: A plurality of drive seats (5) are circumferentially arranged on the outer wall of the same diameter pipe (2), and a drive groove is provided on the drive seat (5).

7. The grooved outer thread pipe (2) with different diameters and same diameters according to claim 6, characterized in that: A same-diameter tube outer thread (3) is provided on the outer wall of the outer end portion of each of the same-diameter tubes (2).

8. The grooved outer thread pipe (2) with different diameters and same diameters according to claim 7, characterized in that: The inner wall of the same-diameter pipe (2) is provided with a same-diameter pipe inner thread (11), and the outer wall of the different-diameter pipe (14) is provided with a different-diameter pipe outer thread (12) matching the same-diameter pipe inner thread (11).

9. The grooved external thread pipe (2) with different diameters and same diameters according to claim 8, characterized in that: The inner wall of the reducer (14) is also provided with a reducer inner thread (13).

10. The grooved outer thread pipe (2) with different diameters and same diameters according to claim 9, characterized in that: A connecting groove (4) is provided on the outer wall of each of the same-diameter tubes (2), and the connecting groove (4) is located in the area between the outer thread (3) of the same-diameter tube and the inner end of the same-diameter tube (2).

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