A pipe quick coupling

Abstract

This utility model relates to the field of pipe fitting technology, specifically disclosing a quick pipe fitting. It includes: a base; a quick clamping mechanism, comprising a clamping structure and a pressing structure disposed within the base for clamping a threaded fitting. The pressing structure is used to clamp the clamping structure towards the threaded fitting. The clamping structure includes an arc-shaped clamping block matching the shape of the threaded fitting, a toothed clamping portion disposed inside the arc-shaped clamping block, and a reset structure disposed between the arc-shaped clamping block and the base. This utility model uses a ring-type clamping method for fixation, achieving a fixing effect without rotation, thus realizing quick installation and disassembly.

Description

Technical Field

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

[0002] In industrial production, pipeline systems are critical facilities for transporting fluids, and the installation and replacement of pressure gauges and other monitoring devices are essential for ensuring the safe operation of pipelines. When it is necessary to check the pressure on a pipeline or replace a pressure gauge, it is usually necessary to shut down the relevant equipment or close the valves on that section of the pipeline to ensure operational safety. When there are multiple monitoring or replacement points, the limited installation space in the pipeline and the inconvenience of threaded connections make pressure gauge replacement time-consuming, affecting the continuity and efficiency of production. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a quick-connect pipe fitting. This invention uses a ring-clamping method for fixing, achieving a fixing effect without rotation, thus realizing quick installation and disassembly.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A quick-connect pipe fitting, comprising:

[0006] Base;

[0007] A quick clamping mechanism includes a clamping structure and a pressing structure disposed within the base for clamping a threaded joint. The pressing structure is used to clamp the clamping structure toward the threaded joint. The clamping structure includes an arc-shaped clamping block that matches the shape of the threaded joint, a toothed clamping part disposed inside the arc-shaped clamping block, and a reset structure disposed between the arc-shaped clamping block and the base.

[0008] According to some embodiments of the present invention, the pressing structure includes a guide portion for guiding the clamping structure to clamp in the direction of the threaded joint.

[0009] According to some embodiments of the present invention, the guide portion includes a first guide surface located at the bottom of the pressing structure, and the top of the arc-shaped clamp has a second guide surface that matches the first guide surface.

[0010] According to some embodiments of the present invention, a first protrusion is provided at the outer edge of the pressing structure, and a stop block is provided at the top of the base, the stop block being able to block above the first protrusion.

[0011] According to some embodiments of the present invention, the stop includes a rotating seat slidably disposed on the top of the base and a second protrusion disposed on the inner side of the rotating seat, the second protrusion having a vertical groove for the first protrusion to press down and pass through.

[0012] According to some embodiments of the present invention, the reset structure includes a spring structure with one end connected to the arc-shaped clamping block and the other end connected to the inner sidewall of the base.

[0013] According to some embodiments of the present invention, the toothed clamping part includes a plurality of V-shaped teeth that can engage with the threads on the threaded joint.

[0014] According to some embodiments of the present invention, the toothed clamping part is detachably installed inside the arc-shaped clamping block.

[0015] According to some embodiments of the present invention, the toothed clamping part further includes a vertically arranged T-shaped protrusion, and the arc-shaped clamping block is provided with a vertical T-shaped groove that matches the T-shaped protrusion.

[0016] According to some embodiments of the present invention, the base is provided with a circular sealing ring that abuts against the bottom of the threaded connector, and the toothed clamping part is provided with an arc-shaped sealing ring that abuts against the side wall of the threaded connector, and each of the arc-shaped sealing rings can be enclosed to form a circular shape.

[0017] This utility model has at least the following beneficial effects:

[0018] The quick-clamping mechanism enables tool-free quick disassembly and assembly. Pressing or pushing the pressing structure can instantly clamp the arc-shaped clamping block to the threaded joint. The toothed clamping part forms multi-point engagement with the outer wall of the thread, achieving the effect of traditional threaded connection without the need for rotation. It eliminates the need for complicated tools or cumbersome thread tightening operations. Especially in cases with multiple inspection points or replacement points, it can greatly reduce the cumulative downtime losses caused by multi-point maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure before clamping according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the clamped structure according to one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the positioning part before positioning in one embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the positioning part after positioning according to an embodiment of the present invention. Detailed Implementation

[0023] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0024] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intermediary element (e.g., the third element) between the element and the other element.

[0026] An embodiment of this utility model provides a quick pipe coupling, such as... Figure 1-4 As shown, it includes:

[0027] Base 1;

[0028] The quick clamping mechanism 200 includes a clamping structure 201 for clamping the threaded connector 4 and a pressing structure 202 disposed in the base 1. The pressing structure 202 is used to clamp the clamping structure 201 toward the threaded connector (4). The clamping structure 201 includes an arc-shaped clamping block 203 that matches the shape of the threaded connector 4, a toothed clamping part 204 disposed inside the arc-shaped clamping block 203, and a reset structure 205 disposed between the arc-shaped clamping block 203 and the base 1.

[0029] The quick-clamping mechanism 200 enables tool-free quick disassembly and assembly. Pressing the pressing structure 202 instantly engages the arc-shaped clamping block 203 with the threaded connector 4. The toothed clamping part 204 forms multi-point engagement with the threaded outer wall, achieving the sealing and fixing effect of traditional threaded connections without rotation. Single-point replacement time is reduced from minutes to seconds, eliminating the need for complex tools or tedious thread tightening operations. Especially in situations with multiple testing or replacement points, it significantly reduces cumulative downtime losses caused by multi-point maintenance. The arc-shaped clamping block 203 in the clamping structure 201 matches the shape of the threaded connector 4, allowing the arc-shaped clamping block 203 to clamp the threaded connector 4 in a wrap-around manner without tightening. This allows a section of the threaded connector 4 of pressure gauges and other testing devices to directly extend into narrow areas, solving the problem of potential collision damage to testing devices caused by the need for rotation during threaded connections in narrow areas. The pressing structure 202 can either push the clamping structure 201 inward from the outside to clamp it, or it can be positioned above the clamping structure 201 and press it downward to clamp it inward. The reset structure 205 can be a manual reset lever or a reset spring, etc., so that after the pressing structure 202 contacts the clamping structure 201, the arc-shaped clamping block 203 can quickly retract and reset, facilitating the quick removal of the threaded connector 4. The toothed clamping part 204 can use thread teeth corresponding to the thread of the threaded connector 4, or it can use a structure with elastic back teeth that generate a micro-self-locking tendency after clamping due to pipeline vibration, etc., to facilitate compatibility with threaded connectors 4 of different sizes and specifications.

[0030] In some embodiments, such as Figure 1-2 As shown, the pressing structure 202 includes a guide portion 206 for guiding the clamping structure 201 to clamp in the direction of the threaded joint 4.

[0031] The guide part of the pressing structure 202 can accurately guide the clamping structure 201 to move towards the threaded joint 4 along a predetermined trajectory, ensuring that the clamping force is evenly distributed and the clamping action is smooth and without jamming. Specifically, it can be a push block set on the outside of the clamping structure 201, which pushes the clamping structure 201 towards the inner threaded joint 4 by lateral pressing; or it can be an inclined pressure block set on the top of the clamping structure 201, which pushes the clamping structure 201 towards the inner threaded joint by pressing down.

[0032] Furthermore, such as Figure 1-2 As shown, the guide portion 206 includes a first guide surface 208 located at the bottom of the pressing structure 202, and the top of the arc-shaped clamp 203 has a second guide surface 209 that matches the first guide surface 208.

[0033] Specifically, the first guide surface 208 at the bottom of the pressing structure 202 and the second guide surface 209 at the top of the arc-shaped clamping block 203 are fitted together in a complementary wedge configuration. When pressed down, the first guide surface 208 synchronously converts the vertical force into a radial clamping force along the wedge angle, causing the arc-shaped clamping block 203 to slide within the base 1. The wedge self-locking angle design ensures that the guide surfaces remain fitted and locked under vibration conditions, eliminating the need for additional locking components and achieving instantaneous clamping with one hand and long-term reliable fixation. The specific angle setting of the first guide surface 208 is determined according to the number and position of the clamping structures 201. For example, in this embodiment, the clamping structure 201 is semi-circular, so the first guide surface 208 is inclined from bottom to top along the midpoint of the clamping structure 201 towards the center of the base 1.

[0034] In some embodiments, such as Figure 1-4 As shown, a first protrusion 210 is provided at the outer edge of the pressing structure 202, and a stop block 102 is provided at the top of the base 1. The stop block 102 can block the first protrusion 210.

[0035] Specifically, as the pressing structure 202 presses down, the first protrusion 210 on the outer side moves downward, and the stop block 102 can block above the first protrusion 210 to prevent the pressing structure 202 from rebounding. Specifically, the stop block 102 can be pushed laterally above the first protrusion 210 by means of a spring or manual operation; or it can be rotated to the top of the first protrusion 210 by rotation, and simultaneously rotated in the opposite direction to unlock and reset, thereby fixing the pressing structure and maintaining the continuous clamping of the clamping structure 201.

[0036] Furthermore, such as Figure 1-4 As shown, the stop 102 includes a rotating seat 103 slidably disposed on the top of the base 1 and a second protrusion 104 disposed on the inner side of the rotating seat 103. The second protrusion 104 has a vertical groove 101 for the first protrusion 210 to press down and pass through.

[0037] Specifically, the top of the base 1 is provided with a sliding groove for sliding to match the bottom of the rotating seat 103. The sliding groove is an annular groove, and the bottom of the rotating seat 103 has a matching slider. The first protrusion 210 can be pressed down along the vertical groove 101 on the second protrusion 104 to the bottom of the second protrusion 104. The rotating seat 103 rotates in the sliding groove to move the second protrusion 104 above the first protrusion 210, so that the top of the first protrusion 210 abuts against the bottom of the second protrusion 104, thereby preventing the springback of the pressing structure 202 and keeping the clamping structure 201 in a clamped state.

[0038] In some embodiments, such as Figure 1-2 As shown, the reset structure 205 includes a spring structure with one end connected to the arc-shaped clamp 203 and the other end connected to the inner wall of the base 1.

[0039] In this embodiment, the spring structure is set between the outer arc surface of the arc-shaped clamping block 203 and the inner side wall of the base 1. The spring axis is arranged coaxially with the clamping direction. When the pressing structure 202 is disengaged from the positioning part 207, the spring instantly retracts and pulls the arc-shaped clamping block 203 open and automatically returns to its original position, releasing all clamping force on the threaded joint 4, realizing rapid reset, and ensuring that the joint can immediately enter the next clamping state when performing continuous multi-point operations.

[0040] In some embodiments, such as Figure 1 As shown, the toothed clamping part 204 includes a plurality of V-shaped teeth 212 that can be inserted into the threads on the threaded connector 4.

[0041] V-shaped teeth 212 are continuously and evenly distributed along the inner arc surface of the arc-shaped clamping block 203. The included angle of their tooth tips matches the tooth profile of the external thread of the threaded connector 4. When pressed down, each V-shaped tooth 212 is instantly inserted into the bottom of the thread valley to form multi-point engagement. Among them, the V-shaped teeth 212 can also be V-shaped elastic teeth, which can be pressed into external threads of different sizes to realize the connection of threaded connectors 4 with different outer diameters.

[0042] Furthermore, the toothed clamping part 204 is detachably installed inside the arc-shaped clamping block 203. This facilitates the replacement of the clamping part according to different thread specifications.

[0043] Furthermore, such as Figure 3 As shown, the toothed clamping part 204 also includes a vertically arranged T-shaped protrusion 213, and the arc-shaped clamping block 203 is provided with a vertical T-shaped groove that matches the T-shaped protrusion 213.

[0044] The T-slot ensures that the clamping part does not rotate relative to the arc-shaped clamping block 203 during the clamping process, thus ensuring a uniform distribution of clamping force. When replacing the clamping part, it can be removed by simply moving it upwards along the T-slot without disassembling other parts, which improves the compatibility with multiple specifications and the convenience of maintenance.

[0045] Furthermore, such as Figure 1-4 As shown, the base 1 is provided with a circular sealing ring 301 that abuts against the bottom of the threaded connector 4, and the toothed clamping part 204 is provided with an arc-shaped sealing ring 302 that abuts against the side wall of the threaded connector 4. The arc-shaped sealing rings 302 can be enclosed to form a circular shape.

[0046] The pre-installed circular sealing ring in the base forms the first axial seal with the end face of the threaded joint. The arc-shaped sealing ring embedded in the toothed clamping part wraps around the side wall of the threaded joint when clamped to form a complete circle, thus forming the second radial seal. The two seals improve the sealing effect.

[0047] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A pipe quick coupling, characterized in that, include: Base (1); The quick clamping mechanism (200) includes a clamping structure (201) for clamping the threaded joint (4) disposed in the base (1) and a pressing structure (202). The pressing structure (202) is used to clamp the clamping structure (201) towards the threaded joint (4). The clamping structure (201) includes an arc-shaped clamping block (203) that matches the shape of the threaded joint (4), a toothed clamping part (204) disposed inside the arc-shaped clamping block (203), and a reset structure (205) disposed between the arc-shaped clamping block (203) and the base (1).

2. A quick coupling for pipes according to claim 1, characterized in that: The pressing structure (202) includes a guide portion (206) for guiding the clamping structure (201) to clamp in the direction of the threaded joint (4).

3. A quick coupling for pipes according to claim 2, characterized in that: The guide (206) includes a first guide surface (208) located at the bottom of the pressing structure (202), and the top of the arc-shaped clamp (203) has a second guide surface (209) that matches the first guide surface (208).

4. A quick coupling according to claim 2 or 3, characterised in that: A first protrusion (210) is provided at the outer edge of the pressing structure (202), and a stop (102) is provided at the top of the base (1). The stop (102) can block the first protrusion (210).

5. A quick coupling according to claim 4, characterized in that: The stop (102) includes a rotating seat (103) slidably disposed on the top of the base (1) and a second protrusion (104) disposed on the inner side of the rotating seat (103), the second protrusion (104) having a vertical groove (101) for the first protrusion (210) to press down through.

6. A quick coupling according to claim 1, characterized in that: The reset structure (205) includes a spring structure with one end connected to the arc-shaped clamp (203) and the other end connected to the inner wall of the base (1).

7. A quick coupling according to claim 1, characterized in that: The toothed clamping part (204) includes a plurality of V-shaped teeth (212) that can be inserted into the threads on the threaded connector (4).

8. A quick coupling according to claim 7, characterized in that: The toothed clamping part (204) is detachably installed inside the arc-shaped clamping block (203).

9. A quick coupling for pipes according to claim 8, characterized in that: The toothed clamping part (204) also includes a vertically arranged T-shaped protrusion (213), and the arc-shaped clamping block (203) is provided with a vertical T-shaped groove that matches the T-shaped protrusion (213).

10. A quick coupling for pipes according to claim 7, characterized in that: The base (1) is provided with a circular sealing ring (301) that abuts against the bottom of the threaded connector (4), and the toothed clamping part (204) is provided with an arc-shaped sealing ring (302) that abuts against the side wall of the threaded connector (4). Each of the arc-shaped sealing rings (302) can be enclosed to form a circular shape.

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