An angle-adjustable elbow

Abstract

This invention proposes an adjustable-angle elbow, comprising: an elbow body and a rotary joint. The elbow body is configured with a bend in the middle and spherical socket sections at both ends. A rotary joint is installed within each spherical socket section. The diameter of the open end of each spherical socket section is larger than the diameter of its inner end. The rotary joint includes a spherical sealing section and a straight pipe section. The spherical sealing section is rotatably housed within the spherical socket section for angle adjustment, and the straight pipe section is used to connect to drainage fittings. A sealing component is fixed to the open end of each spherical socket section to achieve a seal between the spherical sealing section and the spherical socket section. This adjustable-angle elbow allows for continuous and flexible adjustment of the elbow angle within a certain range, is suitable for pipe bend installation requirements on different pitched roofs, and effectively ensures the normal operation and installation reliability of the drainage system.

Description

Technical Field

[0001] This utility model relates to the field of drainage pipes, specifically to an adjustable-angle elbow. Background Technology

[0002] Currently, with the diversification of architectural design, pitched roof structures are widely used due to their aesthetics and functionality, often exhibiting non-standard irregular angles such as 105°, 130°, and 165°. Rainwater pipes must be installed according to the angle of the pitched roof, and their routing changes accordingly. Similarly, in the drainage system of public restaurant kitchens, due to irregular equipment layouts and spatial structures, the turning angles of drainage pipes often exhibit non-standard requirements such as 120°, 110°, and 130°. Building drainage systems are gravity flow systems; the installation slope and routing of pipes must precisely match the building structure and be reliably fixed to the pitched roof or structure using brackets or clamps. Any installation deviations leading to gaps can cause pipe loosening, detachment, joint leaks, poor drainage, and vibrations and abnormal noises caused by water flow impact.

[0003] The current national standard GB / T 12772-2016, "Flexible Joint Cast Iron Pipes, Fittings and Accessories for Building Drainage," only specifies 45° and 90° standard elbows as standard products for pipe bends. In actual construction projects, when encountering these irregular angles, construction workers typically employ two solutions: one is to use existing standard elbows for approximate installation, which results in installation deviations; the other is to contact manufacturers for custom-made non-standard parts with specific angles, which is not only costly and time-consuming to procure, but also increases the complexity of project management. Therefore, current technology lacks a pipe connector that can flexibly adapt to different installation angle requirements. Utility Model Content

[0004] To address the problems of existing standard elbows being unable to adapt to diverse irregular installation angles, resulting in gaps in pipe installation, insecure fixing, easy leakage, vibration and abnormal noise, as well as high costs and long lead times for non-standard customization, this utility model proposes an adjustable-angle elbow.

[0005] The technical solution of this utility model is implemented as follows: An adjustable-angle elbow includes: an elbow body and a rotary joint. The elbow body is configured with a bent pipe section in the middle and spherical socket sections at both ends. A rotary joint is disposed within each spherical socket section. The diameter of the open end of the spherical socket section is larger than the diameter of the inner end. The rotary joint includes a spherical sealing section and a straight pipe section. The spherical sealing section is rotatably housed within the spherical socket section for adjusting the angle. The straight pipe section is used to connect to drainage pipe fittings. A sealing component is fixed to the open end of each spherical socket section to achieve a seal between the spherical sealing section and the spherical socket section.

[0006] Preferably, the open end of the spherical socket section is provided with an outward bevel, and a flange is provided on the outer edge of the bevel, with a connection hole provided on the flange; the sealing component includes a rubber sealing ring and a flange, with the rubber sealing ring correspondingly embedded in the bevel; The inner end of the spherical sealing section does not exceed the inner bottom end of the bevel when it rotates. After the spherical sealing section is rotated to adjust the angle, the flange presses the rubber sealing ring and connects it to the corresponding flange with bolts and nuts, thus sealing the spherical sealing section and the corresponding spherical socket section.

[0007] Preferably, transition sections are provided at both ends of the bend, the outer diameter of one transition section is equal to the inner diameter of the connected spherical socket section, and the included angle between the central axes of the two transition sections is set between 90 degrees and 180 degrees.

[0008] Preferably, any one of the rubber sealing rings is located at the outer end of the corresponding spherical sealing section near the straight pipe section, and continues to function as the spherical sealing section rotates; the rubber sealing ring overflows from the flange after being pressed by the flange.

[0009] Preferably, the cross-section of the transition section gradually narrows and expands, and the spherical sealing section and the spherical socket section are mutually complementary hemispherical structures.

[0010] The beneficial effects of this utility model are as follows: The adjustable-angle elbow of this utility model has two rotating joints whose angles with the elbow body can be continuously adjusted, and the rotating connection between the rotating joints and the elbow body is sealed, which can realize continuous and flexible adjustment of the elbow angle within a certain range. It can be applied to the pipe turning installation requirements of different pitched roofs, effectively ensuring the normal operation and installation reliability of the drainage system. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the internal structure of the elbow in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the external structure of the elbow in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the elbow body according to Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the rotary joint in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the elbow installation in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the internal structure of the elbow in Embodiment 2 of this utility model.

[0013] In the picture: 1. Elbow body; 2. Rotary joint; 3. Sealing components; 11. Bend section; 12. Spherical socket section; 13. Bevel; 14. Flange; 15. Connection hole; 16. Transition section; 21. Spherical sealing section; 22. Straight pipe section; 31. Rubber sealing ring; 32. Flange. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Example 1: As Figures 1 to 6 An adjustable-angle elbow is shown, comprising: an elbow body 1 and a rotary joint 2. The elbow body 1 is configured with a bend in the middle (11) and spherical socket sections 12 at both ends. A rotary joint 2 is installed within each spherical socket section 12. The diameter of the open end of each spherical socket section 12 is larger than the diameter of its inner end. The rotary joint 2 includes a spherical sealing section 21 and a straight pipe section 22. The spherical sealing section 21 is rotatably housed within the spherical socket section 12 for angle adjustment, and the straight pipe section 22 is used to connect to drainage pipe fittings. A sealing component 3 is fixed to the open end of each spherical socket section 12 to achieve a seal between the spherical sealing section and the spherical socket section. The spherical sealing sections of the two rotary joints adjust their angles in the same way, achieving continuous adjustment of the angle at both ends of the elbow. The spherical socket sections of the elbow body also have an anti-detachment function; after the elbow body and the rotary joint are fixed by the sealing component, the rotary joint cannot be pulled out.

[0016] like Figure 3 and Figure 5As shown, the open end of the spherical socket section 12 is provided with an outward bevel 13, and a flange 14 is provided along the outer edge of the bevel. A connection hole 15 is provided on the flange. The sealing component 3 includes a rubber sealing ring 31 and a flange 32. The rubber sealing ring 31 is correspondingly embedded in the bevel. The inner end of the spherical sealing section 21 does not exceed the inner bottom end of the bevel 13 when it rotates. After the spherical sealing section rotates to adjust the angle, the flange 32 presses against the rubber sealing ring 31 and connects to the corresponding flange 32 via bolts and nuts, sealing the spherical sealing section 21 and the spherical socket section 12. The sealing of the two rotary joints with the elbow body is simple in structure, easy to implement, and ensures a good sealing effect. If the inner end of the spherical sealing section 21 rotates beyond the angle adjustment range, the seal will fail.

[0017] like Figure 3 As shown, transition sections 16 are provided at both ends of the bend section 11. The outer diameter of one transition section 16 is equal to the inner diameter of the connected spherical socket section 12. The included angle α between the central axes of the two transition sections 16 is set between 90 degrees and 180 degrees, which initially limits the elbow body to not being a standard 90-degree elbow or straight pipe, and further increases the angle adjustment range of the elbow body.

[0018] like Figure 5 As shown, each rubber sealing ring 31 is located at the outer end of the corresponding spherical sealing section 21 near the straight pipe section, and continues to act as the spherical sealing section rotates. The spherical sealing sections of the two rotary joints can rotate within the spherical socket sections at both ends of the bend pipe section, respectively. During rotation, the two rubber sealing rings continuously act on the two spherical sealing sections, so that after each spherical sealing section adjusts its angle, the seal between the spherical sealing section and the corresponding spherical socket section is strengthened.

[0019] The cross-section of each transition section 15 changes gradually from narrowing to widening. The spherical sealing section and the spherical socket section are mutually complementary hemispherical structures. The design of the transition section is more conducive to drainage, and the hemispherical shape has an anti-detachment function for the interface.

[0020] The spherical sealing section can rotate in multiple dimensions (left, right, forward, and backward) within the spherical socket section, making it suitable for horizontal or multi-directional pipe offset. The central axis of the spherical sealing section can rotate within a range of 0 to 20 degrees around the central axis of the spherical socket section.

[0021] Example 2: The structure of Example 2 is the same as that of Example 1. However, the included angle between the central axes of the pipe openings of the two transition sections of the elbow body 1 in Example 2 is different from that in Example 1.

[0022] The elbow assembly of this utility model is as follows: First, insert the two spherical sealing sections of the two rotary joints into the spherical socket sections at both ends of the elbow body, then install the two rubber sealing rings into the two bevels at both ends of the elbow body, install a flange on the flange of each bevel, and lightly tighten each flange and flange with bolts and nuts.

[0023] The elbow of this utility model is used as follows: First, install the straight pipe section of a rotary joint on the drainage system. Rotate the angle between the rotary joint and the elbow body according to the required angle on site. After adjusting the angle within the adjustment range, fix the sealing component at this point. That is, connect the rubber sealing ring at this end of a flange to the flange at this end of the elbow body with bolts and nuts to seal the connection between the rotary joint and this end of the elbow body. Connect the other rotary joint to the drainage pipe fitting to be connected. Adjust the angle of the other rotary joint. After the angle is adjusted, connect the rubber sealing ring at this end of another flange to the flange at this end of the elbow body with bolts and nuts to seal the connection between the rotary joint and this end of the elbow body.

[0024] When the pipeline is horizontally offset, the adjustable angle elbow of this invention can achieve an angle deflection of 50 degrees to 180 degrees.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An angle adjustable elbow, characterized by, include: The elbow body and the rotary joint are provided. The elbow body is configured with a bent pipe section in the middle and spherical socket sections at both ends. A rotary joint is installed in each spherical socket section. The diameter of the open end of the spherical socket section is larger than the diameter of the inner end. The rotary joint includes a spherical sealing section and a straight pipe section. The spherical sealing section is rotatably housed in the spherical socket section for adjusting the angle. The straight pipe section is used to connect to drainage pipe fittings. A sealing component is fixed to the open end of each spherical socket section to achieve a seal between the spherical sealing section and the spherical socket section.

2. The angle adjustable elbow according to claim 1, wherein, The spherical socket section has an outward bevel at its open end, and a flange is provided on the outer edge of the bevel, with a connection hole on the flange; the sealing component includes a rubber sealing ring and a flange, with the rubber sealing ring correspondingly embedded in the bevel. The inner end of the spherical sealing section does not exceed the inner bottom end of the bevel when it rotates. After the spherical sealing section is rotated to adjust the angle, the flange presses the rubber sealing ring and connects it to the corresponding flange with bolts and nuts, thus sealing the spherical sealing section and the corresponding spherical socket section.

3. The angle adjustable elbow according to claim 1, wherein, The two ends of the bend are respectively provided with transition sections. The outer diameter of one transition section is equal to the inner diameter of the connected spherical socket section. The included angle between the central axes of the two transition sections is set between 90 degrees and 180 degrees.

4. The angle adjustable elbow according to claim 2, wherein, Each of the rubber sealing rings is located at the outer end of the corresponding spherical sealing section near the straight pipe section and continues to function as the spherical sealing section rotates; the rubber sealing ring overflows from the flange after being pressed by the flange.

5. The angle adjustable elbow according to claim 3, wherein, The cross-section of the transition section gradually narrows and expands, and the spherical sealing section and the spherical socket section are mutually complementary hemispherical structures.

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