A copper pipe quick connector

Abstract

This utility model belongs to the field of copper pipes, and in particular, it is a quick-connect fitting for copper pipes. Addressing the problem that existing quick-connect fittings for copper pipes often use welding at both ends, or sometimes use connectors, the connection between the connector and the copper pipe opening is prone to loosening and leakage, the following solution is proposed: It includes a connecting sleeve, two nuts, and two copper pipe bodies. The two nuts are located at both ends of the connecting sleeve and are respectively fitted onto the outer wall of the two copper pipe bodies at their closest points. The connecting sleeve has an inner ring, and each of the two nuts has a connecting sleeve inside. This utility model, through modular design and standardized interfaces, makes the installation process simpler and faster, reducing the skill requirements for operators. At the same time, the threaded and plug-in connections between the components make the installation process more intuitive and easier to understand, improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of copper pipe technology, and in particular to a quick-connect fitting for copper pipes. Background Technology

[0002] In modern industrial and civil applications, copper pipes are widely used in refrigeration systems, heating systems, water treatment systems, and chemical equipment due to their excellent thermal conductivity, corrosion resistance, and machinability. With technological advancements and changing market demands, the performance requirements for copper pipe fittings are increasing, particularly in terms of connection efficiency, sealing, durability, and ease of installation.

[0003] Existing copper pipe quick-connect fittings still have some shortcomings in practical use:

[0004] Existing quick-connect methods for copper pipes mostly involve welding the two ends together, which is a rather cumbersome process. Even if a connector is used, the connection between the connector and the copper pipe opening is prone to loosening and falling off, leading to leakage. Utility Model Content

[0005] The purpose of this utility model is to solve the problems in the existing technology where copper pipe quick-connection is mostly done by welding the two ends together, or by connecting with a connector, and the connector is prone to loosening and falling off, resulting in leakage. Therefore, a copper pipe quick-connect component is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quick-connect fitting for copper pipes includes a connecting sleeve, two nuts, and two copper pipe bodies. The two nuts are located at both ends of the connecting sleeve and are respectively fitted onto the outer walls of the two copper pipe bodies at their close ends. The connecting sleeve has an inner ring, and each of the two nuts has a connecting cylinder. The two connecting cylinders are respectively fitted onto the outer walls of the two copper pipe bodies at their close ends and are connected to the two ends of the inner ring.

[0008] In one possible design, the connecting sleeve is provided with a rotating groove, and the outer ring is fixedly connected to the outer wall of the inner ring, and the outer ring rotates in the rotating groove. An abutting ring is fixedly connected inside the inner ring, and the two copper tube bodies are respectively abutted against the two sides of the abutting ring at their close ends. Insertion grooves are provided on both sides of the inner ring.

[0009] In one possible design, each of the two connecting cylinders is fixedly connected to a plug ring on one side that is close to each other, and the plug ring is inserted into a plug groove. The two connecting cylinders are respectively in contact with the two sides of the inner ring at the ends that are close to each other.

[0010] In one possible design, the inner wall of the connecting sleeve is provided with two second internal threads, and the two second internal threads are respectively located on both sides of the rotating groove. The outer walls of the two connecting cylinders are provided with second external threads, and the two second internal threads are threadedly connected to the two second external threads. The inner walls of the two nuts are provided with first internal threads, and the outer walls of the two connecting cylinders are provided with first external threads, and the two first internal threads are threadedly connected to the first external threads.

[0011] In one possible design, each of the two connecting cylinders is fixedly connected to an abutment block on the side away from each other. Each of the two nuts has a conical hole, and the two conical holes are fitted onto the outer walls of the two abutment blocks. The abutment blocks are petal-shaped. As the first internal thread is tightened on the outer wall of the first external thread, the conical holes squeeze the abutment blocks, thereby clamping the copper tube body.

[0012] In one possible design, the outer walls of both connecting cylinders are fixedly connected with hexagonal bodies, and the two hexagonal bodies are respectively located between the first external thread and the second external thread.

[0013] In this application, the inner ring is located inside the connecting sleeve. The inner ring is mated with the plug ring through the plug grooves on both sides. The connecting sleeve is rotated so that the two second internal threads on the inner wall of the connecting sleeve are threadedly connected to the second external threads on the outer walls of the two connecting cylinders. After the connection is formed, two nuts are respectively put on the outer walls of the two copper tubes at their close ends. Then, two abutment blocks are put on the outer walls of the two copper tubes at their close ends, so that the two copper tubes at their close ends abut against the two sides of the abutment ring. The two nuts are threadedly connected to the first external threads on the outer walls of the two connecting cylinders through the first internal threads. The abutment blocks are in the shape of multiple petals. Through the conical holes in the inner wall of the nuts, the first internal threads are tightened on the first external threads, causing the abutment blocks to shrink inward, thereby clamping and fixing the copper tubes. The connecting sleeve is then rotated to further tighten the connecting sleeve on the outer walls of the two connecting cylinders, so that the two copper tubes at their close ends are firmly abutted against the two sides of the abutment ring, preventing leakage.

[0014] Beneficial effects: In this utility model, the copper tube quick connector uses multiple contact blocks fitted onto the outer wall of the copper tube, and the copper tube can be clamped and fixed by the tapered hole of the inner wall of the nut cooperating with the contact blocks, making the connection relatively simple;

[0015] In this utility model, the copper tube quick connector is connected to two connecting cylinders by a connecting sleeve and a threaded connection. The connecting sleeve rotates on the outer wall of the inner ring, which further tightens the two connecting cylinders on both sides of the inner ring, effectively preventing leakage.

[0016] In this utility model, the modular design and standardized interfaces make the installation process simpler and faster, reducing the skill requirements for operators. At the same time, the threaded and plug-in connections between the components make the installation process more intuitive and easier to understand, improving work efficiency. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a quick-connect fitting for a copper pipe proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of a quick-connect fitting sleeve for a copper pipe according to the present invention.

[0019] Figure 3 This is a cross-sectional exploded view of the connecting sleeve for a copper pipe quick-connect fitting proposed in this utility model.

[0020] In the diagram: 1. Copper tube body; 2. Connecting sleeve; 3. Nut; 4. Abutting ring; 5. Connecting cylinder; 6. Abutting block; 7. Hexagon; 8. Insertion ring; 9. Inner ring; 10. Tapered hole; 11. Insertion groove; 12. Rotating groove; 13. First internal thread; 14. First external thread; 15. Second internal thread; 16. Second external thread; 17. Outer ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1: Refer to Figure 1 and Figure 2 A quick-connect fitting for copper pipes includes a connecting sleeve 2, two nuts 3, and two copper pipe bodies 1. The two nuts 3 are located at both ends of the connecting sleeve 2 and are respectively fitted onto the outer walls of the two copper pipe bodies 1 at their adjacent ends. The connecting sleeve 2 has an inner ring 9, and each of the two nuts 3 has a connecting sleeve 5, which is fitted onto the outer walls of the two copper pipe bodies 1 at their adjacent ends and aligns with the two ends of the inner ring 9. During assembly, the two nuts 3 are placed at both ends of the connecting sleeve 2, and then the two copper pipe bodies 1 at their adjacent ends are fitted into the two nuts 3. The connecting sleeve 2 has an inner ring 9, and each of the two nuts 3 has a connecting sleeve 5. During assembly, the two connecting sleeves 5 are fitted onto the outer walls of the two copper pipe bodies 1 at their adjacent ends, and the two connecting sleeves 5 are aligned with the two ends of the inner ring 9, thus initially constructing the basic structural framework of the quick-connect fitting for copper pipes.

[0023] Reference Figure 2 and Figure 3The connecting sleeve 2 has a rotating groove 12. An outer ring 17 is fixedly connected to the outer wall of the inner ring 9, and the outer ring 17 rotates within the rotating groove 12. An abutment ring 4 is fixedly connected inside the inner ring 9, and the ends of the two copper tube bodies 1 that are close to each other abut against the two sides of the abutment ring 4. Insertion grooves 11 are provided on both sides of the inner ring 9. The inner ring 9, located within the connecting sleeve 2, is engaged by the outer ring 17 rotating within the rotating groove 12. The ends of the two copper tube bodies 1 that are close to each other are used to abut against the two sides of the abutment ring 4, making the connection more stable.

[0024] Reference Figure 3 Each of the two connecting cylinders 5 has a fixed insertion ring 8 on one side that is close to each other, and the insertion ring 8 is inserted into the insertion groove 11. The ends of the two connecting cylinders 5 that are close to each other abut against the two sides of the inner ring 9 respectively. The insertion ring 8 is inserted into the insertion groove 11, and the connecting cylinders 5 abut against the inner ring 9, and the layers of connection increase the sealing effect between them.

[0025] Reference Figure 3 The inner wall of the connecting sleeve 2 is provided with two second internal threads 15, and the two second internal threads 15 are respectively located on both sides of the rotating groove 12. The outer walls of the two connecting cylinders 5 are provided with second external threads 16, and the two second internal threads 15 are threadedly connected to the two second external threads 16. The inner walls of the two nuts 3 are provided with first internal threads 13, and the outer walls of the two connecting cylinders 5 are provided with first external threads 14, and the two first internal threads 13 are threadedly connected to the first external threads 14. The connecting sleeve 2 is threadedly connected to the two connecting cylinders 5 through the second internal threads 15 and the second external threads 16, and the nuts 3 are threadedly connected to the connecting cylinders 5 through the first internal threads 13 and the first external threads 14. The threaded connection method ensures the structural stability and reliability of the entire copper tube quick-connect fitting.

[0026] Reference Figure 3 Each of the two connecting cylinders 5 has a contact block 6 fixedly connected to one of their opposite sides. Each of the two nuts 3 has a conical hole 10, which is fitted onto the outer wall of the two contact blocks 6. The contact blocks 6 are petal-shaped. As the first internal thread 13 is tightened onto the outer wall of the first external thread 14, the conical holes 10 press against the contact blocks 6, thus clamping the copper tube body 1. Because the contact blocks 6 are petal-shaped, they contract inwards when compressed, generating a clamping force on the copper tube body 1, ensuring a tight connection between the copper tube body 1 and the connecting parts, and preventing loosening or leakage during use.

[0027] This application can be used in the field of copper tubes, or in other fields applicable to this application.

[0028] Example 2: Reference Figure 3An improvement upon Embodiment 1: A quick-connect fitting for copper pipes, applied in the field of copper pipes, wherein hexagonal bodies 7 are fixedly connected to the outer walls of two connecting cylinders 5, and the two hexagonal bodies 7 are respectively located between the first external thread 14 and the second external thread 16. The arrangement of the hexagonal bodies 7 facilitates the rotation of the connecting cylinders 5 using tools such as wrenches. When installing or disassembling the quick-connect fitting for copper pipes, it is easier and more convenient to achieve threaded connection or disassembly with the connecting sleeve 2 and nut 3 by rotating the connecting cylinders 5, thereby improving the efficiency of installation and maintenance.

[0029] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick coupling for red copper pipe, characterized by, include: The assembly consists of a connecting sleeve (2), two nuts (3), and two copper tube bodies (1). The two nuts (3) are located at both ends of the connecting sleeve (2) and are respectively fitted onto the outer walls of the two copper tube bodies (1) at their respective close ends. The connecting sleeve (2) is provided with an inner ring (9). Each of the two nuts (3) is provided with a connecting cylinder (5), and the two connecting cylinders (5) are respectively fitted onto the outer walls of the two copper tube bodies (1) at their respective close ends and are connected to the two ends of the inner ring (9).

2. A quick fit coupling for copper pipe according to claim 1, wherein The connecting sleeve (2) is provided with a rotating groove (12). The outer wall of the inner ring (9) is fixedly connected with an outer ring (17), and the outer ring (17) rotates in the rotating groove (12). The inner ring (9) is fixedly connected with an abutting ring (4), and the two copper tube bodies (1) are close to each other at one end and abut against the two sides of the abutting ring (4). The inner ring (9) is provided with a plug-in groove (11) on both sides.

3. A quick fit coupling for copper pipe according to claim 1, wherein The two connecting cylinders (5) are fixedly connected to each other on the side that is close to each other, and the connecting rings (8) are inserted into the connecting grooves (11). The two connecting cylinders (5) are respectively in contact with the two sides of the inner ring (9).

4. A quick fit coupling for copper pipe according to claim 1, wherein The inner wall of the connecting sleeve (2) is provided with two second internal threads (15), and the two second internal threads (15) are respectively located on both sides of the rotating groove (12). The outer walls of the two connecting cylinders (5) are provided with second external threads (16), and the two second internal threads (15) are threadedly connected to the two second external threads (16). The inner walls of the two nuts (3) are provided with first internal threads (13), and the outer walls of the two connecting cylinders (5) are provided with first external threads (14), and the two first internal threads (13) are threadedly connected to the first external threads (14).

5. A quick coupling for red copper pipes according to claim 1, characterized in that, The two connecting cylinders (5) are fixedly connected to each other on the side away from each other. The two nuts (3) are provided with conical holes (10), and the two conical holes (10) are respectively sleeved on the outer walls of the two contact blocks (6). The contact blocks (6) are petal-shaped. As the first internal thread (13) is tightened on the outer wall of the first external thread (14), the conical holes (10) squeeze the contact blocks (6) to clamp the copper tube body (1).

6. A quick-connect fitting for copper pipes according to claim 1, characterized in that, The outer walls of the two connecting cylinders (5) are fixedly connected with hexagonal bodies (7), and the two hexagonal bodies (7) are respectively located between the first external thread (14) and the second external thread (16).

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