A combination female threaded elbow pipe fitting

Abstract

The utility model relates to a combined female thread elbow pipe fitting. It solves the technical problems that multiple elbows are combined through several times of welding during installation, and the screw spacing needs to be measured during construction. It comprises a corner elbow, a right-angle elbow is arranged on one side of the corner elbow, a first connecting rod is arranged on one side of the corner elbow, a second connecting rod corresponding to the first connecting rod is arranged on the side close to the corner elbow of the right-angle elbow, a detachable connecting structure is arranged between the first connecting rod and the second connecting rod, and female thread parts for connecting output assemblies are arranged on the inner side of one end of the corner elbow and the right-angle elbow. The advantages are that the large-arc corner elbow and the small-arc right-angle elbow are integrated, the two elbows can be effectively fixed at a fixed length, the convenience of pipeline construction in specific use scenarios is improved, the probability of secondary construction is reduced, no additional adapter is needed, the problem of single adaptation scene of traditional elbows is solved, and the universality of the pipe fitting is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of elbow pipe fittings, specifically relating to a combined female thread elbow pipe fitting. Background Technology

[0002] During the construction of a piping system, there are sometimes situations where hot and cold water pipes in the same direction need to be connected to faucets and other kitchen and bathroom appliances. If commercially available pipe fittings are used, they need to be assembled by welding multiple times using 90° elbows, 90° female thread elbows, etc., and the thread pitch also needs to be measured during construction to ensure that the water-using equipment can be installed accurately, making the process quite cumbersome. Summary of the Invention

[0003] The purpose of this utility model is to address the above-mentioned problems by providing a combined female thread elbow pipe fitting.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a combined female threaded elbow pipe fitting, including a corner elbow, a right-angle elbow on one side of the corner elbow, a first connecting rod on one side of the corner elbow, a second connecting rod corresponding to the first connecting rod on the side of the right-angle elbow near the corner elbow, a detachable connection structure between the first connecting rod and the second connecting rod, and a female threaded portion for connecting an output component on the inner side of one end of both the corner elbow and the right-angle elbow. This integrated corner elbow and right-angle elbow allow for combined angle turning, solving the problem that traditional single elbows can only meet fixed angle turning and require additional adapters. The connecting rods feature a detachable connection structure, allowing for disassembly, replacement, or adjustment of the elbow assembly without pipe cutting, reducing the difficulty of pipe modification and maintenance. The corner elbow and right-angle elbow are made of PP-R, PB, PE, or PE-RT materials, and the fitting offers two different combination methods, allowing hot and cold water pipes coming in the same direction to be distributed according to a fixed thread pitch, facilitating the installation of faucets and other kitchen and bathroom appliances.

[0005] In the aforementioned combined female threaded elbow fitting, the detachable connection structure includes a first connecting part disposed at the end of the first connecting rod away from the corner elbow, and a second connecting part corresponding to the first connecting part disposed at the end of the second connecting rod away from the right-angle elbow, and the first connecting part is connected to the second connecting part through a vertical plug-in assembly.

[0006] In the aforementioned combined female threaded elbow pipe fitting, the vertical insertion assembly includes a first insertion block disposed at one end of a first connecting portion, with a first insertion groove at one end of the first insertion block. The second connecting portion has a second insertion block corresponding to the first insertion groove at one end, and a second insertion groove corresponding to the first insertion block at one end of the second insertion block. The interlocking design of the first insertion block and the second insertion groove, and the second insertion block and the first insertion groove, enables rapid alignment of the connecting portion, avoiding the misalignment problem that easily occurs with lateral insertion. Simultaneously, the bidirectional insertion method forms a vertical limiting structure, effectively resisting axial and radial impact forces during pipeline operation and improving the overall rigidity of the combined structure.

[0007] In the aforementioned combined female threaded elbow fitting, the corner elbow has a large arc-shaped portion. One end of the large arc-shaped portion has a first water outlet perpendicular to the plane of the large arc-shaped portion, and the end of the large arc-shaped portion away from the first water outlet has a first water inlet. This significantly reduces the local resistance of fluid passing through the elbow, minimizing turbulence and pressure loss. It is particularly suitable for systems with high flow and pressure requirements, or for conveying fluids prone to sedimentation.

[0008] In the aforementioned combined female threaded elbow fitting, the right-angle elbow has a small arc-shaped portion. One end of this small arc-shaped portion has a second water outlet arranged in the same direction and parallel to the first water outlet. The end of the small arc-shaped portion away from the second water outlet has a second water inlet arranged in the same direction and parallel to the first water inlet. The first water outlet is perpendicular to the plane containing the large arc-shaped portion, the second water outlet is parallel to the first water outlet in the same direction, and the first water inlet is parallel to the second water inlet in the same direction. This ensures that the combined elbow has regular water inlet and outlet directions, allowing for orderly pipe arrangement in confined spaces and preventing pipe crossings and confusion.

[0009] In the aforementioned combined female threaded elbow fitting, the female threads are respectively located inside the first water outlet and the second water outlet. Both the first and second water inlets are connected to water supply pipelines via a heat-fusion socket connection. The female threads on the inner sides of the first and second water outlets allow for direct matching with standard output components without the need for additional adapters. Furthermore, the heat-fusion socket connection between the first and second water inlets ensures a good seal and is compatible with common pipeline installation techniques.

[0010] In the aforementioned combined female threaded elbow pipe fitting, the large arc-shaped part has a large inner arc edge on one side and a large outer arc edge on the other side, and the small arc-shaped part has a small inner arc edge on one side and a small outer arc edge on the other side.

[0011] In the aforementioned combined female threaded elbow fitting, the first connecting rod is located at the end of the large inner arc edge near the first water outlet and is arranged parallel to the first water inlet.

[0012] In the aforementioned combined female threaded elbow fitting, the second connecting rod is located at the end of the small outer arc edge near the second water outlet and is coaxially arranged with the second water inlet.

[0013] In the aforementioned combined female threaded elbow fitting, the first connecting rod is provided with a first connecting hole, and the second connecting rod is provided with a second connecting hole. The first and second connecting holes can be used to fix the connecting rods to a wall, ground, or other supporting structure by adding bolts, preventing displacement of the pipeline due to its own weight or fluid impact.

[0014] Compared with existing technologies, the advantages of this utility model are as follows.

[0015] 1. This device integrates a large arc-shaped corner elbow and a small arc-shaped right-angle elbow, which are connected in a fixed length combination. This allows the thread pitch of the two elbows to be effectively fixed, improving the convenience of pipeline construction in specific application scenarios, reducing the probability of secondary construction, and eliminating the need for additional adapters. This solves the problem of traditional elbows being only suitable for a limited range of scenarios and greatly improves the versatility of pipe fittings.

[0016] 2. The device adopts a bidirectional interlocking vertical plug-in structure of plug-in blocks and plug-in slots, which can quickly position and connect double elbows without the need for fasteners such as bolts and nuts. The structure uses self-locking to achieve dual axial and radial limiting to prevent the connection from loosening. At the same time, it can be disassembled without damage. When maintaining, replacing or adjusting the pipeline layout, there is no need to cut the water supply pipeline, which reduces construction costs and downtime. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a top view of the corner bend in this utility model.

[0019] Figure 3 This is the front view of the corner bend in this utility model.

[0020] Figure 4 This is a top view of the right-angle elbow in this utility model.

[0021] Figure 5 This is the front view of the right-angle elbow in this utility model.

[0022] Figure 6 This is a schematic diagram of another combination of the present invention.

[0023] Figure 7 This is a structural diagram of the present invention during use.

[0024] In the diagram: 1. Corner elbow, 11. Large arc section, 12. First water outlet, 13. First water inlet, 14. Large inner arc edge, 15. Large outer arc edge, 2. Right-angle elbow, 21. Small arc section, 22. Second water outlet, 23. Second water inlet, 24. Small inner arc edge, 25. Small outer arc edge, 3. First connecting rod, 31. First connecting hole, 4. Second connecting rod, 41. Second connecting hole, 5. Detachable connection structure, 51. First connecting part, 52. Second connecting part, 53. Vertical plug-in assembly, 54. First plug-in block, 55. Second plug-in block, 56. Second plug-in slot, 57. Female threaded part, 6. Output assembly, 7. Water supply pipe, 8. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1-7 As shown, a combined female threaded elbow fitting includes a corner elbow 1, a right-angle elbow 2 on one side of the corner elbow 1, a first connecting rod 3 on one side of the corner elbow 1, and a second connecting rod 4 corresponding to the first connecting rod 3 on the side of the right-angle elbow 2 near the corner elbow 1. A detachable connection structure 5 is provided between the first connecting rod 3 and the second connecting rod 4, and both the corner elbow 1 and the right-angle elbow 2 have female threaded portions 6 on the inner side of one end for connecting to an output component 7. Integrating the corner elbow 1 and the right-angle elbow 2, the combined use achieves compound angle turning, solving the problem that traditional single elbows can only meet fixed angle turning and require additional adapters. Simultaneously, the detachable connection structure 5 between the connecting rods allows for disassembly, replacement, or adjustment of the elbow assembly without cutting the pipeline, reducing the difficulty of pipeline modification and maintenance. The corner elbow 1 and the right-angle elbow 2 are made of PP-R, PB, PE, or PE-RT, and as shown... Figure 6 The fitting shown has two different combination methods, which allow cold and hot water pipes coming from the same direction to be distributed according to a fixed screw pitch, making it convenient for the installation of kitchen and bathroom equipment such as faucets.

[0027] Combination Figure 1 , Figure 2 and Figure 4 As shown, the detachable connection structure 5 includes a first connecting part 51 disposed at the end of the first connecting rod 3 away from the corner bend 1, and a second connecting part 52 corresponding to the first connecting part 51 disposed at the end of the second connecting rod 4 away from the right angle bend 2, and the first connecting part 51 is connected to the second connecting part 52 through a vertical plug-in assembly 53.

[0028] The vertical insertion assembly 53 includes a first insertion block 54 disposed at one end of the first connecting part 51, with a first insertion groove 55 at one end of the first insertion block 54. The second connecting part 52 has a second insertion block 56 corresponding to the first insertion groove 55 at one end, and a second insertion groove 57 corresponding to the first insertion block 54 at one end of the second insertion block 56. The mating design of the first insertion block 54 and the second insertion groove 57, and the second insertion block 56 and the first insertion groove 55, enables rapid alignment of the connecting parts, avoiding the offset problem that easily occurs with lateral insertion. Simultaneously, the bidirectional insertion method forms a vertical limiting structure, effectively resisting axial and radial impact forces during pipeline operation and improving the overall rigidity of the combined structure.

[0029] Combination Figure 1 and Figure 5 As shown, the corner elbow 1 has a large arc-shaped portion 11. One end of the large arc-shaped portion 11 is provided with a first water outlet 12 perpendicular to the plane of the large arc-shaped portion 11, and the end of the large arc-shaped portion 11 away from the first water outlet 12 is provided with a first water inlet 13. This greatly reduces the local resistance of fluid passing through the elbow, reduces turbulence and pressure loss, and is particularly suitable for systems with high flow and pressure requirements, or for conveying fluids that are prone to sedimentation.

[0030] Specifically, the right-angle elbow 2 has a small arc-shaped portion 21. One end of the small arc-shaped portion 21 is provided with a second water outlet 22, which is arranged in the same direction and parallel to the first water outlet portion 12. The end of the small arc-shaped portion 21 away from the second water outlet portion 22 is provided with a second water inlet 23, which is arranged in the same direction and parallel to the first water inlet portion 13. The first water outlet portion 12 is perpendicular to the plane where the large arc-shaped portion 11 is located. The second water outlet portion 22 is parallel to the first water outlet portion 12 in the same direction. The first water inlet portion 13 is parallel to the second water inlet portion 23 in the same direction. This makes the water inlet and outlet directions of the combined elbow regular, and allows for the orderly arrangement of pipelines in a narrow space, avoiding pipeline crossing and confusion.

[0031] Combination Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, the female threaded portions 6 are respectively located inside the first water outlet 12 and the second water outlet 22. The first water inlet 13 and the second water inlet 23 are both connected to the water supply pipe 8 via a heat fusion socket connection. The female threaded portions 6 on the inner sides of the first water outlet 12 and the second water outlet 22 can be directly matched with standard output components without the need for additional adapters. At the same time, the heat fusion socket connection between the first water inlet 13 and the second water inlet 23 provides good sealing performance and is compatible with common pipe installation processes.

[0032] Combination Figure 1 and Figure 5As shown, the large arc-shaped portion 11 has a large inner arc edge 14 on one side and a large outer arc edge 15 on the other side, and the small arc-shaped portion 21 has a small inner arc edge 24 on one side and a small outer arc edge 25 on the other side.

[0033] The first connecting rod 3 is located on the inner arc side 14 near the first water outlet 12 and is arranged parallel to the first water inlet 13.

[0034] Specifically, the second connecting rod 4 is located on the small outer arc edge 25 near the end of the second water outlet 22 and is coaxially arranged with the second water inlet 23.

[0035] Meanwhile, the first connecting rod 3 is provided with a first connecting hole 31, and the second connecting rod 4 is provided with a second connecting hole 41. The first connecting hole 31 and the second connecting hole 41 can be used to fix the connecting rod to the wall, the ground or other supporting structure by adding bolts, so as to prevent the pipeline from shifting due to its own weight or fluid impact.

[0036] The principle of this embodiment is as follows: First, place the corner elbow 1 and right-angle elbow 2 in the preset positions, aligning the first connecting rod 3 and the second connecting rod 4. Insert the first plug block 54 of the first connecting part 51 into the second plug groove 57 of the second connecting part 52, while simultaneously inserting the second plug block 56 of the second connecting part 52 into the first plug groove 55 of the first connecting part 51. Through bidirectional interlocking, the two connecting rods are precisely positioned and self-locked, ultimately integrating the corner elbow 1 and right-angle elbow 2 into a stable assembly. Then, perform heat fusion socket connection between the water supply pipeline 8 and the first water inlet 13 of the corner elbow 1 and the second water inlet 23 of the right-angle elbow 2, respectively, so that the pipeline and the water inlet are fused together to ensure the sealing of the high-pressure fluid during transportation and prevent leakage. At the same time, the internal threads 6 on the inner side of the first water outlet 12 and the second water outlet 22 are used to directly connect to the standardized output assembly 7 without the need for additional adapters, achieving rapid assembly.

[0037] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0038] Although this document frequently uses terms such as corner elbow 1, large arc section 11, first water outlet 12, first water inlet 13, large inner arc edge 14, large outer arc edge 15, right-angle elbow 2, small arc section 21, second water outlet 22, second water inlet 23, small inner arc edge 24, small outer arc edge 25, first connecting rod 3, first connecting hole 31, second connecting rod 4, second connecting hole 41, detachable connection structure 5, first connecting part 51, second connecting part 52, vertical plug-in assembly 53, first plug-in block 54, first plug-in groove 55, second plug-in block 56, second plug-in groove 57, female threaded part 6, output assembly 7, and water supply pipeline 8, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A combined female threaded elbow pipe fitting, comprising a corner elbow (1), wherein a right-angle elbow (2) is provided on one side of the corner elbow (1), characterized in that, The corner bend (1) is provided with a first connecting rod (3) on one side, and the right angle bend (2) is provided with a second connecting rod (4) corresponding to the first connecting rod (3) on the side near the corner bend (1). A detachable connection structure (5) is provided between the first connecting rod (3) and the second connecting rod (4), and the inner side of one end of both the corner bend (1) and the right angle bend (2) is provided with a female threaded part (6) for connecting the output component (7).

2. The combined female threaded elbow pipe fitting according to claim 1, characterized in that, The detachable connection structure (5) includes a first connecting part (51) provided at the end of the first connecting rod (3) away from the corner bend (1), and a second connecting part (52) corresponding to the first connecting part (51) is provided at the end of the second connecting rod (4) away from the right angle bend (2), and the first connecting part (51) is connected to the second connecting part (52) through a vertical plug-in assembly (53).

3. A combined female threaded elbow pipe fitting according to claim 2, characterized in that, The vertical plug-in assembly (53) includes a first plug-in block (54) disposed at one end of the first connecting part (51), a first plug-in groove (55) provided at one end of the first plug-in block (54), a second plug-in block (56) corresponding to the first plug-in groove (55) at one end of the second connecting part (52), and a second plug-in groove (57) corresponding to the first plug-in block (54) at one end of the second plug-in block (56).

4. A combined female threaded elbow pipe fitting according to claim 1, 2, or 3, characterized in that, The corner bend (1) has a large arc-shaped part (11), one end of which is provided with a first water outlet (12) perpendicular to the plane of the large arc-shaped part (11), and the end of the large arc-shaped part (11) away from the first water outlet (12) is provided with a first water inlet (13).

5. A combined female threaded elbow pipe fitting according to claim 4, characterized in that, The right-angle elbow (2) has a small arc-shaped part (21). One end of the small arc-shaped part (21) is provided with a second water outlet (22) that is in the same direction and parallel to the first water outlet (12). The end of the small arc-shaped part (21) away from the second water outlet (22) is provided with a second water inlet (23) that is in the same direction and parallel to the first water inlet (13).

6. A combined female threaded elbow pipe fitting according to claim 5, characterized in that, The female threaded part (6) is respectively located inside the first water outlet (12) and the second water outlet (22). The first water inlet (13) and the second water inlet (23) are both connected to the water supply pipeline (8) by heat fusion socket connection.

7. A combined female threaded elbow pipe fitting according to claim 5, characterized in that, The large arc-shaped part (11) has a large inner arc edge (14) on one side and a large outer arc edge (15) on the other side. The small arc-shaped part (21) has a small inner arc edge (24) on one side and a small outer arc edge (25) on the other side.

8. A combined female threaded elbow pipe fitting according to claim 7, characterized in that, The first connecting rod (3) is located on the inner arc side (14) near the first water outlet (12) and is arranged parallel to the first water inlet (13).

9. A combined female threaded elbow pipe fitting according to claim 7, characterized in that, The second connecting rod (4) is located on the outer arc edge (25) near the end of the second water outlet (22) and is coaxially arranged with the second water inlet (23).

10. A combined female threaded elbow pipe fitting according to claim 5, characterized in that, The first connecting rod (3) is provided with a first connecting hole (31), and the second connecting rod (4) is provided with a second connecting hole (41).

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