A pipe bend
By designing an adjustable pipe elbow structure, the problems of damage to pipelines during disassembly and installation limitations of existing elbows are solved, achieving flexible adjustment and high sealing performance, and adapting to various spatial layouts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJI POWER MASCH (SHANGHAI) CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-14
AI Technical Summary
The existing pipe elbow structure is a single piece, and disassembly may damage the pipeline. On-site adjustments are required during installation, which limits its applicability.
Design a pipe elbow comprising a main side shell, a rotating seat, a support shaft, and a docking adjustment assembly. The secondary side shell is rotatably connected to the support shaft, and the adjustable elbow structure is achieved by using the docking adjustment assembly and threaded connection, which facilitates on-site adjustment.
It enables the detachable installation and flexible adjustment of pipe elbows, improving applicability and sealing performance, and meeting the needs of different spatial layouts.
Smart Images

Figure CN224497913U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipeline connection technology, specifically relating to a pipe elbow. Background Technology
[0002] In piping structures, elbows can be used to adjust the pipe's direction by changing its angle, adapting to spatial layout or process requirements. They can bypass obstacles, connect equipment with non-linear layouts, or meet the turning needs of the pipeline network. Compared to right-angle welding or sharp turns, using curved elbow structures can reduce turbulence and pressure loss, improving system efficiency. Existing pipe elbows can basically meet daily usage needs. However, most elbow structures are one-piece structures, and disassembly after fixing may damage the original pipeline. In addition, the dimensions of elbows are relatively fixed after leaving the factory, and installation is limited by the position of the pipe connection points, requiring splicing and adjustment on site, which affects the applicability of the elbow. Therefore, designing a pipe elbow is very necessary. Utility Model Content
[0003] The purpose of this utility model is to provide a pipe elbow with a simple structure and reasonable design in order to solve the above problems.
[0004] This utility model achieves the above objectives through the following technical solutions:
[0005] A pipe elbow includes a main side housing, a first rotating seat on the main side housing, a support shaft sleeved in the first rotating seat, a second rotating seat rotatably connected to the support shaft, the second rotating seat being disposed on a secondary side housing, and a docking adjustment assembly being disposed between the main side housing and the secondary side housing.
[0006] As a further optimization of this utility model, the docking adjustment assembly includes limiting blocks symmetrically arranged on the inner walls of the main side shell and the secondary side shell. The limiting blocks are sleeved in limiting grooves, which are formed on support tubes. The support tubes are sleeved between the main side shell and the secondary side shell.
[0007] As a further optimization of this utility model, a sealing ring is fitted into the groove of the inner wall of the main side shell and the secondary side shell. The sealing ring is fitted onto the support tube. A threaded tube is threadedly connected to the support tube. The threaded tube is fixed to the mating head. An outer branch tube is provided on the mating head.
[0008] As a further optimization of this utility model, a locking sleeve is threadedly connected to the outer branch pipe, the locking sleeve is fitted onto the rubber ring, and the rubber ring is sleeved on the outer branch pipe.
[0009] As a further optimization of this utility model, the outer branch pipe is evenly provided with mounting grooves, the outer branch pipe is slidably connected to the support pipe, a friction block is slidably connected in the mounting groove, one end of the friction block is attached to the support pipe, and the other end of the friction block is attached to the wedge-shaped surface of the inner wall of the locking sleeve.
[0010] As a further optimization of this utility model, a hexagonal slot is provided on the main side housing, a fixing nut is fitted in the hexagonal slot, a fixing bolt is connected in the fixing nut, and the fixing bolt is pressed tightly into a groove on the secondary side housing.
[0011] The beneficial effects of this utility model are as follows:
[0012] 1. In this utility model, the first rotating seat and the second rotating seat are supported by the rotation of the support shaft, and the secondary side shell and the main side shell are rotatably connected. Then, the fixing nuts and fixing bolts are used to lock and fix them. Later, the fixing bolts can be removed to separate the secondary side shell and the main side shell, which is convenient for adjustment and replacement in the later stage.
[0013] 2. This utility model allows the butt joint to be rotated according to the assembly position requirements. The butt joint drives the threaded pipe and the outer branch pipe to rotate as a whole. During the rotation, the overall length of the butt joint and the support pipe is adjusted by the threaded engagement of the threaded pipe and the support pipe. After adjustment, the butt joint is held and the locking sleeve is screwed on. The locking sleeve is driven to slide along the axis of the outer branch pipe and approach the rubber ring by the threaded engagement of the locking sleeve and the outer branch pipe. During the process, the wedge-shaped surface inside the locking sleeve will squeeze the spherical structure of the locking sleeve, so that the friction block presses tightly against the outer wall of the support pipe, locking the position of the butt joint and the threaded pipe relative to the support pipe. This makes it convenient to adjust the docking position of the elbow structure according to the site requirements and improves the overall applicability. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0015] Figure 2 This is a side view of the structure of this utility model;
[0016] Figure 3 This is an exploded structural diagram of the present invention.
[0017] In the diagram: 1. Main side housing; 2. First rotating seat; 3. Support shaft; 4. Second rotating seat; 5. Secondary side housing; 6. Interlocking adjustment assembly; 7. Hexagonal slot; 8. Fixing nut; 9. Fixing bolt; 60. Threaded pipe; 61. Limiting block; 62. Limiting groove; 63. Support pipe; 64. Sealing ring; 65. Butt joint; 66. Outer branch pipe; 67. Locking sleeve; 68. Rubber ring; 69. Friction block; 70. Mounting groove. Detailed Implementation
[0018] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0019] Example
[0020] Please see Figures 1-3 A pipe elbow includes a main side housing 1, on which a first rotating seat 2 is disposed. A support shaft 3 is sleeved in the first rotating seat 2, and a second rotating seat 4 is rotatably connected to the support shaft 3. The second rotating seat 4 is disposed on a secondary side housing 5. Both the secondary side housing 5 and the main side housing 1 are right-angled semi-pipe structures. After the support shaft 3 rotatably supports the first rotating seat 2 and the second rotating seat 4, the secondary side housing 5 and the main side housing 1 are interconnected and can rotate around the support shaft 3. A hexagonal slot 7 is formed on the main side housing 1. A fixing nut 8 is fitted into the hexagonal slot 7. After the fixing nut 8 is fitted into the hexagonal slot 7, the fixing nut 8 is rotated and limited by the inner wall of the hexagonal slot 7. A fixing bolt 9 is connected to the fixing nut 8. The fixing bolt 9 is pressed tightly into the groove on the secondary housing 5. After the fixing nut 8 is locked by the fixing bolt 9, the secondary housing 5 and the main housing 1 fit together to form a complete curved pipe. A docking adjustment component 6 is provided between the main housing 1 and the secondary housing 5. The docking adjustment component 6 can adjust the docking installation position of the curved pipe.
[0021] The docking adjustment assembly 6 includes limiting blocks 61 symmetrically arranged on the inner walls of the main side housing 1 and the secondary side housing 5. The limiting blocks 61 are fitted into limiting grooves 62, which are formed in the support tube 63. After the secondary side housing 5 and the main side housing 1 are locked together by bolts and nuts, the limiting blocks 61 are fitted into the limiting grooves 62 on the support tube 63, fixing the entire support tube 63. The support tube 63 is fitted between the main side housing 1 and the secondary side housing 5. Sealing rings 64 are fitted into the grooves on the inner walls of the main side housing 1 and the secondary side housing 5. A sealing ring 64 is fitted onto the support pipe 63, and the sealing ring 64 is tightly pressed between the main side shell 1, the secondary side shell 5, and the support pipe 63, improving the sealing performance of the pipeline. A threaded pipe 60 is threadedly connected to the support pipe 63, and the threaded pipe 60 is fixed to the butt joint 65. An outer branch pipe 66 is provided on the butt joint 65, and a flange joint for connecting water pipes is provided on the butt joint 65. A locking sleeve 67 is threadedly connected to the outer branch pipe 66, and the locking sleeve 67 is fitted onto a rubber ring 68, which is fitted onto the outer branch pipe 66. The locking sleeve 67 is screwed tightly onto the rubber ring 68. The rubber ring 68 increases the thread friction between the locking sleeve 67 and the outer branch pipe 66, preventing the locking sleeve 67 from loosening due to rotation. The outer branch pipe 66 has evenly spaced mounting grooves 70, which slidably connect to the support pipe 63. A friction block 69 is slidably connected in the mounting groove 70. One end of the friction block 69 is attached to the support pipe 63. This end of the friction block 69 has an arc-shaped structure that conforms to the pipe surface, and friction protrusions are provided on the arc-shaped structure. The friction between the friction block 69 and the support tube 63 is increased. The other end of the friction block 69 is attached to the wedge-shaped surface of the inner wall of the locking sleeve 67. The end of the friction block 69 that is attached to the inner wall of the locking sleeve 67 has a spherical structure. During the rotation of the locking sleeve 67, it will slide along the axis of the outer branch tube 66 through the threaded engagement. During the process, the wedge-shaped surface will squeeze the spherical structure of the locking sleeve 67, so that the arc-shaped structure on the friction block 69 presses tightly against the outer wall of the support tube 63, locking the position of the butt joint 65 and the threaded tube 60 relative to the support tube 63.
[0022] It should be noted that, in use, this type of pipe elbow firstly supports the first rotating seat 2 and the second rotating seat 4 by rotating the support shaft 3, thereby connecting the secondary housing 5 and the main housing 1. Then, according to the assembly position requirements, the coupling 65 is rotated, causing the threaded pipe 60 and the outer branch pipe 66 to rotate as a whole. During rotation, the overall length of the coupling 65 and the support pipe 63 is adjusted by the threaded engagement between the threaded pipe 60 and the support pipe 63. After adjustment, the coupling 65 is held and the locking sleeve 67 is screwed on. The locking sleeve 67, through its threaded engagement with the outer branch pipe 66, slides along the axis of the outer branch pipe 66 towards the rubber ring 68. During this process, the locking sleeve will... The wedge-shaped surface inside the locking sleeve 67 compresses the spherical structure of the locking sleeve 67, causing the friction block 69 to press tightly against the outer wall of the support tube 63, locking the position of the butt joint 65 and the threaded tube 60 relative to the support tube 63. Then, the support tube 63 is placed in the main side housing 1, so that the limiting block 61 in the main side housing 1 is fitted into the limiting groove 62 of the support tube 63. Then, the secondary side housing 5 is rotated around the support shaft 3, so that the secondary side housing 5 is pressed tightly against the main side housing 1, forming a complete bent pipe structure. Then, the secondary side housing 5 and the main side housing 1 are locked together by the fixing nut 8 and the fixing bolt 9 to achieve fixation. Finally, the pipes to be connected are connected through the butt joint 65 to achieve the effect of adjusting the pipe direction.
[0023] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A pipe elbow, comprising a main side housing (1), characterized in that: A first rotating seat (2) is provided on the main side housing (1), a support shaft (3) is sleeved in the first rotating seat (2), a second rotating seat (4) is rotatably connected on the support shaft (3), the second rotating seat (4) is provided on the secondary side housing (5), and a docking adjustment assembly (6) is provided between the main side housing (1) and the secondary side housing (5).
2. A pipe elbow according to claim 1, characterized in that: The docking adjustment assembly (6) includes limiting blocks (61) symmetrically arranged on the inner walls of the main side shell (1) and the secondary side shell (5). The limiting blocks (61) are sleeved in the limiting groove (62), which is opened on the support tube (63). The support tube (63) is sleeved between the main side shell (1) and the secondary side shell (5).
3. A pipe elbow according to claim 2, characterized in that: A sealing ring (64) is fitted into the groove of the inner wall of the main side shell (1) and the secondary side shell (5). The sealing ring (64) is fitted onto the support tube (63). A threaded tube (60) is threadedly connected to the support tube (63). The threaded tube (60) is fixed to the connector (65). An outer branch tube (66) is provided on the connector (65).
4. A pipe elbow according to claim 3, characterized in that: A locking sleeve (67) is threadedly connected to the outer branch pipe (66). The locking sleeve (67) fits onto the rubber ring (68), which is sleeved on the outer branch pipe (66).
5. A pipe elbow according to claim 4, characterized in that: The outer branch pipe (66) is evenly provided with mounting grooves (70), the outer branch pipe (66) is slidably connected to the support pipe (63), and a friction block (69) is slidably connected in the mounting groove (70). One end of the friction block (69) is attached to the support pipe (63), and the other end of the friction block (69) is attached to the wedge-shaped surface of the inner wall of the locking sleeve (67).
6. A pipe elbow according to claim 1, characterized in that: The main side housing (1) has a hexagonal slot (7) and a fixing nut (8) is fitted in the hexagonal slot (7). A fixing bolt (9) is connected in the fixing nut (8) and the fixing bolt (9) is pressed tightly in the groove on the secondary side housing (5).