Quick-change connector

Abstract

The utility model discloses a quick-change connector, which relates to the technical field of pipeline processing, and comprises a compression ring assembly and a locking assembly detachably connected to the compression ring assembly, the compression ring assembly comprises a first arc compression ring and a second arc compression ring, one side of the first arc compression ring is hinged and matched with one side of the second arc compression ring, and the other side of the first arc compression ring is hinged and matched with the locking assembly. The other side of the second arc-shaped pressing ring is fixed through the locking assembly, the second arc-shaped pressing ring is further provided with a drainage pipe penetrating through the side wall of the second arc-shaped pressing ring and communicating with the hooping hole, an extension section is reserved on the drainage pipe in the direction of the hooping hole, and a groove is formed in the inner wall of the second arc-shaped pressing ring in the circumferential direction of the extension section. A sealing gasket matched with the groove in shape is arranged in the groove; the extension section of the drainage pipe is embedded into the opening in the side wall of the connecting pipe fitting, so that the pipe fitting can be quickly opposite to the drainage pipe, the sealing gasket structure is further arranged, the connecting sealing performance between the pipe fitting and the drainage pipe can be greatly improved, and leakage at the connecting position is prevented.

Description

Technical Field

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

[0002] Pipelines are widely used in mechanical equipment and piping systems, especially as one of the simplest and safest ways to transport media such as water, fuel oil, and natural gas. Currently, there are several basic methods for connecting pipelines: First, hot-melt welding is used to weld the ends of two sets of pipes together. However, the hot-melt process is cumbersome, time-consuming, and difficult to operate in open-air conditions. Second, flanged pipe joints are used, typically suitable for pipe inlets and outlets and valve connections. However, flanged pipe joints require first connecting the pipe to the flange, and then connecting the two flanges. Because the flanges require a high degree of coaxiality, installation is difficult and prone to leakage.

[0003] Therefore, to address the problems of cumbersome pipe connection procedures, high operational difficulty, and easy leakage in existing pipe connections, a quick-connect fitting is now provided. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings and deficiencies in the existing technology by providing a quick-connect coupling that effectively solves the problems of cumbersome pipe connection steps, high operational difficulty, and easy leakage after connection.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a quick-change connector, including a pressure ring assembly and a locking assembly detachably connected to the pressure ring assembly. The pressure ring assembly includes a first arc-shaped pressure ring and a second arc-shaped pressure ring. The first arc-shaped pressure ring and one side of the second arc-shaped pressure ring are hinged together. The other side of the first arc-shaped pressure ring and the second arc-shaped pressure ring are fixed by the locking assembly. A clamping hole for clamping the pipe is formed between the first arc-shaped pressure ring and the second arc-shaped pressure ring. A drain pipe is also provided on the second arc-shaped pressure ring, penetrating the side wall of the second arc-shaped pressure ring and communicating with the clamping hole. An extension section is reserved in the drain pipe toward the clamping hole. A groove is formed on the inner wall of the second arc-shaped pressure ring along the circumference of the extension section. A sealing gasket adapted to the shape of the groove is provided in the groove.

[0007] Preferably, the drainage tube is integrally formed with the second arc-shaped pressure ring.

[0008] Preferably, the thickness of the sealing gasket is greater than the depth of the groove and less than the length of the extension.

[0009] Preferably, the first arc-shaped pressure ring has a positioning hole that penetrates the side wall of the first arc-shaped pressure ring, and the axis of the positioning hole coincides with the axis of the extension section.

[0010] Preferably, the locking assembly includes a nut and a bolt. The first arc-shaped pressure ring has a mounting hole for installing the nut, and the second arc-shaped pressure ring has a locking hole at the position corresponding to the mounting hole. The bolt passes through the locking hole and is threadedly connected to the nut in the mounting hole.

[0011] Preferably, the drainage tube is an L-shaped pipe, and the L-shaped pipe is located on the hinge side of the outer clamping hole facing the hinge of the first arc-shaped pressure ring and the second arc-shaped pressure ring.

[0012] Preferably, the nut of the locking assembly is a press-fit nut, which is fixedly connected to the mounting hole on the first arc-shaped pressure ring by press-fitting.

[0013] Preferably, the first arc-shaped pressure ring and the second arc-shaped pressure ring are hinged together by a male and female rivet.

[0014] Preferably, both the first arc-shaped pressure ring and the second arc-shaped pressure ring have strip grooves formed on their inner surfaces.

[0015] Preferably, the first arc-shaped pressure ring and the second arc-shaped pressure ring are provided with reinforcing ribs at the ends where the locking assembly is installed.

[0016] The present invention achieves the following beneficial effects compared to the prior art:

[0017] 1. This utility model provides a quick-connect coupling. Because it is equipped with a pressure ring assembly and a locking assembly, the first arc-shaped pressure ring and the second arc-shaped pressure ring are used to clamp the pipe fitting. With the detachable locking assembly, the clamping force can be adjusted to securely connect the connecting pipe fitting and the drainage pipe. The operation is convenient and quick.

[0018] 2. During the process of connecting the fittings and the drainage pipe, the extension of the drainage pipe is embedded into the side wall opening of the fitting, which allows the fittings and the drainage pipe to be quickly aligned. In addition, a sealing gasket structure is provided, which can greatly increase the sealing performance of the connection between the fittings and the drainage pipe and prevent leakage at the connection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0020] Figure 1This is a schematic diagram of the overall structure of a quick-connect coupling in an embodiment of this utility model;

[0021] Figure 2 This is an exploded view of the overall structure of a quick-connect coupling in an embodiment of this utility model;

[0022] Figure 3 This is an exploded view of the overall structure of a quick-connect coupling from another perspective in an embodiment of this utility model.

[0023] Figure 4 As an embodiment of this utility model Figure 3 The front view;

[0024] Figure 5 As an embodiment of this utility model Figure 3 Top view.

[0025] Among them, 1. First arc-shaped pressure ring; 2. Positioning hole; 3. Mounting hole; 4. Second arc-shaped pressure ring; 5. Drainage tube; 6. Extension section; 7. Groove; 8. Locking hole; 9. Bolt; 10. Nut; 11. Flat washer; 12. Spring washer; 13. Threaded rivet; 14. Sealing gasket; 15. Locking boss; 16. Reinforcing rib; 17. Strip groove; 18. U-shaped frame; 19. Protrusion; 20. Hinge hole. Detailed Implementation

[0026] 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.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 5As shown, this utility model provides a quick-connect coupling, including a pressure ring assembly and a locking assembly detachably connected to the pressure ring assembly. The pressure ring assembly includes a first arc-shaped pressure ring 1 and a second arc-shaped pressure ring 4. The first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 are hinged to one side, and the other side of the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 are fixed by the locking assembly. A clamping hole is formed between the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 to clamp the pipe fitting. A drain pipe 5 is also provided on the second arc-shaped pressure ring 4, which penetrates the side wall of the second arc-shaped pressure ring and communicates with the clamping hole. An extension section 6 is reserved in the drain pipe 5 towards the clamping hole. A groove 7 is provided on the inner wall of the second arc-shaped pressure ring 4 along the circumference of the extension section. A sealing gasket 14 adapted to the shape of the groove 7 is provided in the groove 7.

[0029] By hinged together a first arc-shaped pressure ring 1 and a second arc-shaped pressure ring 4, the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 can be unfolded during installation. Then, the extension section 6 is inserted into the opening on the side wall of the fitting, and the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 are closed to lock the fitting, thus installing the drainage pipe 5 onto the fitting. Installation and disassembly are convenient and quick. To ensure the sealing between the extension section 6 and the opening on the side wall of the fitting, a groove 7 is formed on the inner wall of the second arc-shaped pressure ring 4 along the circumference of the extension section 6, and a sealing gasket 14 is placed in the groove 7 to seal the circumference of the extension section 6, achieving a better sealing effect.

[0030] The drainage tube 5 and the second arc-shaped pressure ring 4 are integrated into one structure. While ensuring the connection strength between the drainage tube 5 and the second arc-shaped pressure ring 4, the number of potential leakage points after the quick-connect fitting and pipe fitting are connected is reduced, and the sealing difficulty is reduced.

[0031] Based on the above structure, the thickness of the sealing gasket 14 is set to be greater than the depth of the groove 7 and less than the length of the extension section 6. The sealing effect is further improved by using the compression of the sealing gasket 14 by the second arc-shaped pressure ring 4 and the side wall of the pipe.

[0032] like Figure 2 As shown, a positioning hole 2 is provided on the first arc-shaped pressure ring 1, which penetrates the side wall of the first arc-shaped pressure ring 1. The axis of the positioning hole 2 coincides with the axis of the extension section 6. Before installing the connector, a drainage hole for installing the extension section 6 needs to be opened at a preset position on the outer wall of the pipe fitting. By using the reverse pre-installation method of the quick-connect connector, the position directly opposite to the positioning hole 2 is the opening position of the drainage hole. Then, by installing the quick-connect connector in the forward direction, the extension section 6 can be embedded into the drainage hole for installation and positioning, so as to achieve precise positioning of the extension section 6 of the quick-connect connector on the pipe fitting.

[0033] like Figure 2As shown, the first arc-shaped pressure ring 1 has a mounting hole 3, and the second arc-shaped pressure ring 4 has a locking hole 8 coaxial with the mounting hole 3. The locking assembly includes a nut 10 and a bolt 9, wherein the nut 10 is embedded in the mounting hole 3, and the bolt 9 passes through the locking hole 8 and can be threadedly connected to the nut 10, thereby locking the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4. At the same time, the locking assembly of this application also includes a flat washer 11 and a spring washer 12. Before locking the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4, the flat washer 11 and the spring washer 12 are laid between the bolt 9 and the second arc-shaped pressure ring 4 in sequence. The cooperation of the flat washer 11 and the spring washer 12 can generate elastic deformation during the tightening process, enhance the friction, and effectively prevent the bolt from loosening due to vibration or temperature changes.

[0034] Furthermore, the nut 10 of the locking assembly is preferably a press-fit nut, which is fixedly connected to the first arc-shaped pressure ring 1 by press-fitting, effectively preventing the nut 10 from loosening due to vibration or temperature changes.

[0035] Based on the above structure, in order to improve the locking fit of the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4, the locking ends of the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 are respectively provided with locking bosses 15 having mating surfaces. Mounting holes 3 and locking holes 8 are correspondingly opened on the locking bosses 15. By locking the locking bosses 15, the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 are locked. The transition section between the locking bosses 15 and the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 is also provided with reinforcing ribs 16 to improve the connection strength between the locking bosses 15 and the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 respectively.

[0036] Depending on the usage requirements, the drainage pipe 5 can be a straight pipe or a special-shaped pipe. When the drainage pipe 5 is an L-shaped pipe, it is preferable that the pipe opening of the L-shaped pipe is located on the hinge side of the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4, so as to avoid interference between the drainage pipe 5 and the locking tool during the later installation of the bolt 9, making the operation more convenient.

[0037] like Figure 3 As shown, a U-shaped frame 18 is provided on the hinge side of the first arc-shaped pressure ring 4, and a protrusion 19 corresponding to the U-shaped frame 18 is provided on the hinge side of the second arc-shaped pressure ring 4. A hinge hole 20 is provided on the U-shaped frame 18 and the protrusion 19, which are coaxially arranged. A male and female rivet 13 is installed in the hinge hole 20 to movably connect the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4. The male and female rivet 13 does not restrict the opening angle of the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4. Under the condition that the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4 do not interfere with each other, they can be opened by at least 180°.

[0038] like Figures 2 to 3As shown, a strip groove 17 is provided on the inner side of the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4. This reduces the overall weight while increasing the friction on the inner side of the first arc-shaped pressure ring 1 and the second arc-shaped pressure ring 4, preventing displacement relative to the pipe due to temperature changes.

[0039] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quick-connect coupling, characterized in that: The device includes a pressure ring assembly and a locking assembly detachably connected to the pressure ring assembly. The pressure ring assembly includes a first arc-shaped pressure ring and a second arc-shaped pressure ring. The first arc-shaped pressure ring and one side of the second arc-shaped pressure ring are hinged together. The other side of the first arc-shaped pressure ring and the second arc-shaped pressure ring are fixed by the locking assembly. A clamping hole for clamping the pipe is formed between the first arc-shaped pressure ring and the second arc-shaped pressure ring. A drainage pipe is also provided on the second arc-shaped pressure ring, penetrating the side wall of the second arc-shaped pressure ring and communicating with the clamping hole. An extension section is reserved in the drainage pipe toward the clamping hole. A groove is formed on the inner wall of the second arc-shaped pressure ring along the circumference of the extension section. A sealing gasket adapted to the shape of the groove is provided in the groove.

2. The quick-connect coupling according to claim 1, characterized in that: The drainage tube is integrally formed with the second arc-shaped pressure ring.

3. The quick-connect coupling according to claim 1, characterized in that: The thickness of the sealing gasket is greater than the depth of the groove and less than the length of the extension.

4. The quick-connect coupling according to claim 1, characterized in that: The first arc-shaped pressure ring is also provided with a positioning hole that penetrates the side wall of the first arc-shaped pressure ring, and the axis of the positioning hole coincides with the axis of the extension section.

5. The quick-connect coupling according to claim 1, characterized in that: The locking assembly includes a nut and a bolt. The first arc-shaped pressure ring has a mounting hole for installing the nut, and the second arc-shaped pressure ring has a locking hole corresponding to the mounting hole. The bolt passes through the locking hole and is threadedly connected to the nut in the mounting hole.

6. The quick-connect coupling according to claim 5, characterized in that: The drainage tube is an L-shaped pipe, and the L-shaped pipe is located on the outside of the clamping hole, facing the hinge side of the first arc-shaped pressure ring and the second arc-shaped pressure ring.

7. The quick-connect coupling according to claim 5, characterized in that: The nut of the locking assembly is a press-fit nut, which is fixedly connected to the mounting hole on the first arc-shaped pressure ring by press-fitting.

8. The quick-connect coupling according to claim 1, characterized in that: The first arc-shaped pressure ring and the second arc-shaped pressure ring are hinged together by a male and female rivet.

9. The quick-connect coupling according to claim 1, characterized in that: Both the first arc-shaped pressure ring and the second arc-shaped pressure ring have strip grooves on their inner surfaces.

10. The quick-connect coupling according to claim 1, characterized in that: The first arc-shaped pressure ring and the second arc-shaped pressure ring are further provided with reinforcing ribs at the ends where the locking assembly is installed.

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