Variable-diameter connecting pipe at fluid conduit end

Abstract

The utility model belongs to the field of variable-diameter connecting pipes, particularly relates to a variable-diameter connecting pipe at a fluid conduit end, and aims to solve the problems that a communication channel of a traditional variable-diameter connecting pipe is fixed and is difficult to install when two existing pipelines needing to be connected have deviation during installation, and the following scheme is provided: the variable-diameter connecting pipe comprises a large pipe, a first small pipe and a second small pipe, the first small pipe and the second small pipe are both arranged in a bent mode, a first positioning ring is integrally formed on the circumference of the first small pipe, a first threaded fastening sleeve is rotationally connected to the circumference of the first small pipe, and the first threaded fastening sleeve is in threaded connection with the large pipe. And meanwhile, through matched rotation of the first small pipe and the second small pipe, when the two sections of pipelines are connected, the device can adapt to the two sections of pipelines with deviation or normal, and the use flexibility is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable diameter connecting pipes, in particular to a variable diameter connecting pipe at an end of a fluid conduit. Background Art

[0002] A reducer, also known as a reducer or reducer joint, is a pipe connector that is mainly used to connect pipes of different diameters so that the pipeline system can transport fluids smoothly. It is widely used in various occasions that require connecting pipes of different diameters, such as in the petroleum, chemical, natural gas, water supply and drainage, heating, refrigeration and other industrial fields.

[0003] The connecting channels at both ends of the existing reducer connecting pipe are usually fixed. When there is a deviation between the two pipe sections to be connected during installation, the connecting channels of the traditional reducer connecting pipe are fixed and difficult to install. Therefore, a reducer connecting pipe at the end of the fluid conduit is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art that when there is a deviation between two sections of pipes to be connected during installation, the traditional reducing connecting pipe has a fixed communication channel and is difficult to install, and a reducing connecting pipe for a fluid conduit end is proposed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The reducer connecting tube at the end of the fluid conduit comprises a large tube, a first small tube, and a second small tube. The first small tube and the second small tube are both bent. A first positioning ring is integrally formed on the circumference of the first small tube. The first small tube is rotatably connected to a first threaded fastening sleeve. The first threaded fastening sleeve is threadedly connected to the large tube. The first positioning ring is located between one end of the first small tube and an inner wall of one side of the first threaded fastening sleeve.

[0007] A second positioning ring is integrally formed at one end of the second small tube, and a second threaded fastening sleeve is circumferentially connected to the second small tube. The second threaded fastening sleeve is threadedly connected to one end of the first small tube, and the second positioning ring is located between the first small tube and the second threaded fastening sleeve.

[0008] As a further solution of the present invention, one end of the large tube and the second small tube are both provided with a thread groove.

[0009] As a further solution of the present invention, the circumference of the first threaded fastening sleeve and the circumference of the second threaded fastening sleeve are both integrally formed with a hexagonal sleeve.

[0010] As a further solution of the present invention, first sealing gaskets are provided on both sides of the first positioning ring.

[0011] As a further solution of the present invention, second sealing gaskets are provided on both sides of the second positioning ring.

[0012] As a further solution of the present invention, the tops of the first threaded fastening sleeve and the second threaded fastening sleeve are fixedly connected to the first fixing block, the top of the large tube and the top of the first small tube are fixedly connected to the second fixing block, and a penetrating positioning bolt is inserted between adjacent first and second fixing blocks, and one end of the positioning bolt is threadedly connected to a nut.

[0013] In this application, the large tube is first fixed, and then the angles of the first small tube and the second small tube are adjusted according to the position deviation of the pipes on both sides. During the adjustment, the first threaded fastening sleeve and the second threaded fastening sleeve are loosened, and then the first small tube and the second small tube are rotated to adjust the angles of the first small tube and the second small tube. Then, the second small tube is connected to the pipe, and the first small tube and the second small tube are rotated in coordination to adapt to two sections of pipes with deviations or normal conditions, thereby improving the flexibility of use. After the pipes are connected, the first threaded fastening sleeve and the second threaded fastening sleeve are locked to prevent medium leakage. After locking, positioning bolts are installed between the first fixing block and the second fixing block respectively to prevent the first threaded fastening sleeve and the second threaded fastening sleeve from rotating, thereby improving the safety of use.

[0014] Beneficial effect: In the present invention, the reducer connecting tube at the end of the fluid conduit rotates in coordination with the first small tube and the second small tube, so that when the two sections of the pipeline are connected, they can adapt to the presence of deviations or normal two sections of the pipeline, thereby improving the flexibility of use;

[0015] In the present invention, the reducer connecting pipe at the end of the fluid conduit passes through the first fixing block. The second fixing block and the positioning bolt cooperate to enable the positioning bolt to be installed between the first fixing block and the second fixing block after the pipes are connected, thereby preventing the first threaded fastening sleeve and the second threaded fastening sleeve from rotating, thereby improving safety in use.

[0016] In the utility model, a positioning bolt is installed between the first fixing block and the second fixing block to prevent the first threaded fastening sleeve and the second threaded fastening sleeve from rotating, thereby improving the safety of use. At the same time, the first small tube and the second small tube rotate in coordination, and thus when the two sections of the pipeline are connected, it can adapt to two sections of the pipeline with deviation or normal, thereby improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the reducer connecting pipe at the end of the fluid conduit proposed by the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the reducer connecting pipe at the end of the fluid conduit proposed in the present invention;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the reducer connecting pipe at the end of the fluid conduit proposed by the present invention.

[0020] In the figure: 1. large tube; 2. first small tube; 3. first threaded fastening sleeve; 4. second threaded fastening sleeve; 5. second small tube; 6. hexagonal sleeve; 7. first fixing block; 8. positioning bolt; 9. second fixing block; 10. threaded groove; 11. first positioning ring; 12. first sealing gasket; 13. second positioning ring; 14. second sealing gasket. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1, with reference to Figure 1-Figure 3 , the connecting pipe includes: a large pipe 1, a first small pipe 2 and a second small pipe 5, the first small pipe 2 and the second small pipe 5 are both bent, the first small pipe 2 and the second small pipe 5 rotate together, and then when the two sections of the pipeline are connected, they can adapt to the presence of deviations or normal two sections of the pipeline, thereby improving the flexibility of use, the circumference of the first small pipe 2 is integrally formed with a first positioning ring 11, the circumference of the first small pipe 2 is connected to the first threaded fastening sleeve 3 by rotation, the first threaded fastening sleeve 3 is threadedly connected to the large pipe 1, the first positioning ring 11 is located between one end of the first small pipe 2 and one side inner wall of the first threaded fastening sleeve 3, the first threaded fastening sleeve 3 is rotated, and then it can cooperate with the first positioning ring 11 to realize the connection between the large pipe 1 and the first small pipe 2;

[0023] A second positioning ring 13 is integrally formed at one end of the second small tube 5. The second small tube 5 is connected to the second threaded fastening sleeve 4 for circumferential rotation. The second threaded fastening sleeve 4 is threadedly connected to one end of the first small tube 2. The second positioning ring 13 is located between the first small tube 2 and the second threaded fastening sleeve 4. By rotating the second threaded fastening sleeve 4, the first small tube 2 and the second small tube 5 can be fixed through the second positioning ring 13.

[0024] Example 2, reference Figure 1-Figure 3 , based on Example 1, the reducer connecting pipe at the end of the fluid conduit is improved:

[0025] In the present invention, one end of the large tube 1 and the second small tube 5 are both provided with a thread groove 10, and the thread groove 10 is used to connect with the pipeline.

[0026] In particular, the circumference of the first threaded fastening sleeve 3 and the circumference of the second threaded fastening sleeve 4 are both integrally formed with a hexagonal sleeve 6 , which facilitates people to rotate the circumference of the first threaded fastening sleeve 3 and the second threaded fastening sleeve 4 .

[0027] It should be noted that first sealing gaskets 12 are provided on both sides of the first positioning ring 11 , and the first sealing gaskets 12 increase the sealing performance of the connection between the large tube 1 and the first small tube 2 .

[0028] In the present invention, second sealing gaskets 14 are provided on both sides of the second positioning ring 13 , and the second sealing gaskets 14 increase the sealing performance between the first small tube 2 and the second small tube 5 .

[0029] In particular, the tops of the first threaded fastening sleeve 3 and the second threaded fastening sleeve 4 are fixedly connected to the first fixing block 7, the tops of the large tube 1 and the tops of the first small tube 2 are fixedly connected to the second fixing block 9, and penetrating positioning bolts 8 are inserted between adjacent first fixing blocks 7 and second fixing blocks 9. One end of the positioning bolts 8 is threadedly connected to a nut, and the positioning bolts 8 are respectively installed between the first fixing block 7 and the second fixing block 9, thereby preventing the first threaded fastening sleeve 3 and the second threaded fastening sleeve 4 from rotating, thereby improving safety in use.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A reducer connecting pipe at the end of a fluid conduit, characterized in that: The invention comprises a large tube (1), a first small tube (2) and a second small tube (5), wherein the first small tube (2) and the second small tube (5) are both bent, a first positioning ring (11) is integrally formed on the circumference of the first small tube (2), a first threaded fastening sleeve (3) is connected to the circumference of the first small tube (2), the first threaded fastening sleeve (3) is threadedly connected to the large tube (1), and the first positioning ring (11) is located between one end of the first small tube (2) and an inner wall of one side of the first threaded fastening sleeve (3); A second positioning ring (13) is integrally formed at one end of the second small tube (5), and the second small tube (5) is circumferentially connected to a second threaded fastening sleeve (4). The second threaded fastening sleeve (4) is threadedly connected to one end of the first small tube (2), and the second positioning ring (13) is located between the first small tube (2) and the second threaded fastening sleeve (4).

2. The fluid conduit end reducing connecting pipe according to claim 1, characterized in that: One end of each of the large tube (1) and the second small tube (5) is provided with a thread groove (10).

3. The fluid conduit end reducing connecting pipe according to claim 1, characterized in that: The circumference of the first threaded fastening sleeve (3) and the circumference of the second threaded fastening sleeve (4) are both integrally formed with a hexagonal sleeve (6).

4. The fluid conduit end reducing connecting pipe according to claim 1, characterized in that: First sealing gaskets (12) are provided on both sides of the first positioning ring (11).

5. The fluid conduit end reducing connecting pipe according to claim 1, characterized in that: Second sealing pads (14) are provided on both sides of the second positioning ring (13).

6. The fluid conduit end reducing connecting pipe according to claim 1, characterized in that: The tops of the first threaded fastening sleeve (3) and the second threaded fastening sleeve (4) are fixedly connected to a first fixing block (7), the tops of the large tube (1) and the tops of the first small tube (2) are fixedly connected to a second fixing block (9), and a positioning bolt (8) is inserted through each of the adjacent first fixing blocks (7) and second fixing blocks (9), and one end of each positioning bolt (8) is threadedly connected to a nut.

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