Anti-leakage quick connector

Abstract

The utility model relates to the technical field of quick connectors, and provides an anti-leakage quick connector which comprises a fixed pipe and a butt joint pipe head, the inner side of a butt joint port of the fixed pipe is arranged to be in a step shape, and a butt joint port of the butt joint pipe head is arranged to be in a step shape matched with the butt joint port of the fixed pipe. An annular mounting cavity is formed in the inner wall of a butt joint port of the fixed pipe, a locking assembly is mounted in the annular mounting cavity, and the locking assembly specifically comprises an elastic tensioning ring distributed in the annular mounting cavity and eight locking balls uniformly mounted on the inner ring surface of the elastic tensioning ring; the eight locking balls penetrate out of eight penetrating holes formed in the inner wall of the butt joint end opening of the fixing pipe and are clamped into eight locking holes formed in the outer wall of the butt joint end of the butt joint pipe head. The anti-leakage quick connector is ingenious in design, and has the advantages of being quick in locking, anti-leakage, safe, easy to operate, easy to unlock and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of quick connectors, and particularly relates to a leak-proof quick connector. Background Art

[0002] In the field of liquid transportation, quick, safe, and reliable connectors are key components to ensure the normal operation of fluid systems. With the acceleration of the industrialization process, the requirements for liquid transportation systems are also getting higher and higher. Especially in industries such as chemical engineering, petroleum, and food processing, strict requirements are imposed on the performance of connectors. Traditional liquid transportation connectors mostly adopt threaded connections. Although this connection method is stable, the installation and disassembly processes are cumbersome, time-consuming, and after multiple uses, thread wear is likely to occur, resulting in a decline in sealing performance and even leakage.

[0003] Although existing leak-proof quick connectors have solved the problem of installation and disassembly convenience to a certain extent, there are still some deficiencies. For example, although some connectors adopt a snap-fit design, in actual use, due to insufficient locking force of the snap, they are prone to looseness under pressure changes or vibration environments, resulting in connector detachment or leakage. In addition, the sealing design of some connectors is not perfect enough to effectively prevent liquid leakage under high pressure or high temperature conditions.

[0004] Therefore, this solution specifically proposes a leak-proof quick connector to solve the above problems. Content of the Utility Model

[0005] To overcome the defects of the prior art, the purpose of the utility model is to provide a leak-proof quick connector.

[0006] To achieve the above purpose, the technical solution of the utility model is realized as follows: A leak-proof quick connector includes a fixed pipe and a docking pipe head. The inner side of the docking port of the fixed pipe is set to be stepped, and the docking port of the docking pipe head is set to be stepped and adapted to the docking port of the fixed pipe. An annular installation cavity is arranged inside the inner wall of the docking port of the fixed pipe, and a locking component is installed inside the annular installation cavity. The locking component specifically includes an elastic expansion ring distributed inside the annular installation cavity, 8 locking beads evenly installed on the inner ring surface of the elastic expansion ring, and the 8 locking beads pass through 8 through holes arranged on the inner wall of the docking port of the fixed pipe and are clamped inside 8 locking holes arranged on the outer wall of the docking end of the docking pipe head. An annular boss is arranged on the outside of the fixed pipe near the port, 8 rotation-limiting positioning columns are evenly arranged on the upper end surface of the annular boss, and a sliding rotation-limiting sleeve ring is slidably sleeved on the outside of the docking pipe head, and 8 rotation-limiting positioning holes are evenly arranged on the lower end surface of the sliding rotation-limiting sleeve ring.

[0007] Preferably, the eight rotation-limiting positioning posts are correspondingly inserted into the interiors of eight rotation-limiting positioning holes provided on the lower end surface of the sliding rotation-limiting collar in a docking state.

[0008] Preferably, the top end of each rotation-limiting positioning column is configured to be round-headed.

[0009] Preferably, the inner hole shape of the locking hole is arranged to be a horizontally distributed half water drop shape.

[0010] Preferably, a plurality of O-rings are evenly installed on the inner wall of the fixed pipe docking port, and a plurality of annular sealing grooves compatible with the O-rings are evenly arranged on the outer wall of the docking port of the docking pipe head.

[0011] Preferably, four guide protrusions are evenly arranged on the inner side of the sliding rotation-limiting collar, and the four guide protrusions are correspondingly slidably engaged with the inside of four guide rails arranged on the outer pipe wall of the butt joint pipe head.

[0012] The beneficial effects of the utility model are embodied in:

[0013] Quick locking docking: Through the clamping design of the locking bead and the locking hole, the quick locking docking between the fixed pipe and the butt joint is realized, which greatly simplifies the cumbersome operation of traditional threaded docking and improves work efficiency.

[0014] Anti-leakage performance: The combination of O-ring and annular sealing groove enhances the sealing performance of the joint and effectively prevents the leakage of liquid or gas.

[0015] Prevent accidental unlocking: The matching design of the rotation-limiting positioning column and the rotation-limiting positioning hole prevents accidental rotation when the butt joint connector and the fixed pipe are connected, ensures that the locking bead will not fall out of the locking hole, and improves the safety of the connector.

[0016] Easy to operate: The round head-shaped rotation-limiting positioning column top design makes the insertion and extraction operations smoother and optimizes the operating experience.

[0017] Easy to unlock: By sliding the limited rotation collar and rotating the butt joint, the locking bead can be compressed inwards, so that the unlocking operation can be easily completed, which is convenient for disassembly and maintenance of the joint.

[0018] This anti-leakage quick connector is cleverly designed, combining multiple advantages such as quick locking, anti-leakage, safety, easy operation and easy unlocking. It not only improves work efficiency and reduces the complexity of operation, but also enhances the sealing performance and safety of the connector, making the installation, use and maintenance of the connector easier. This connector is suitable for a variety of industrial and civil occasions, especially in occasions that require frequent docking and disassembly, and its superior performance will greatly improve work efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the accompanying drawings:

[0020] Figure 1 is a schematic structural view of the present utility model;

[0021] Figure 2 is a semi-sectional structural view of the present utility model;

[0022] Figure 3 is a semi-sectional structural view of the present utility model in the butt-jointed and rotation-limiting locked state;

[0023] Figure 4 is a semi-sectional structural view of the present utility model in the butt-jointed and non-rotation-limiting locked state;

[0024] Figure 5 is Figure 3 a partially enlarged schematic view at position A;

[0025] Figure 6 is a schematic structural view of the locking assembly of the present utility model;

[0026] Explanation of reference numerals in the drawings:

[0027] 1, fixed pipe; 2, butt-jointed pipe head; 3, annular installation cavity; 4, locking assembly; 5, annular boss; 6, rotation-limiting positioning post; 7, sliding rotation-limiting collar;

[0028] 11, O-ring seal; 12, passing hole;

[0029] 21, locking hole; 22, annular sealing groove; 23, guide rail;

[0030] 41, elastic tensioning ring; 42, locking bead;

[0031] 71, rotation-limiting positioning hole; 72, guide convex tooth. Detailed implementation manners

[0032] The present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative efforts shall fall within the scope of protection of the utility model.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0034] In addition, "a plurality of" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] Please refer to the attached Figures 1 - 6 drawings of the specification, the present utility model provides a quick connector with anti-leakage:

[0036] The inner side of the docking port of the fixed pipe 1 is designed to be stepped so as to match the stepped structure at the docking port of the docking pipe head 2. This design helps to ensure the accuracy and stability when the two components are docked.

[0037] An annular installation cavity 3 is provided inside the inner wall of the docking port of the fixed pipe 1, and a locking assembly 4 is installed therein. The locking assembly 4 includes an elastic tensioning ring 41, and 8 locking beads 42 are evenly installed on the inner ring surface of the elastic tensioning ring 41.

[0038] The 8 locking beads 42 pass through 8 through holes 12 on the inner wall of the docking port of the fixed pipe 1 and are clamped inside 8 locking holes 21 on the outer wall of the docking end of the docking pipe head 2. This design ensures the quick locking docking between the fixed pipe and the docking pipe head, and abandons the cumbersome design of traditional threaded docking operation.

[0039] An annular boss 5 is provided at the outer part of the fixed pipe 1 near the port, and 8 rotation-limiting positioning columns 6 are evenly arranged on the upper end surface of the annular boss 5. These rotation-limiting positioning columns 6 are inserted into 8 rotation-limiting positioning holes 71 provided on the lower end surface of the sliding rotation-limiting sleeve ring 7 in the docking state to limit the rotation when the docking pipe head 2 and the fixed pipe 1 are docked, thereby preventing the situation where the locking beads 42 are disengaged from the locking holes 21.

[0040] The top end of each rotation-limiting positioning column 6 is designed to be round-headed to ensure smooth insertion and extraction and optimize the insertion operation.

[0041] The hole shape inside the locking hole 21 is designed as a horizontally distributed half-drop shape. This shape helps the stable clamping of the locking bead 42. And when it is necessary to separate the fixed pipe 1 and the docking pipe head 2, the sliding limit rotating collar 7 can be held by hand and slid to the upper end and the entire docking pipe head 2 is rotated clockwise. At this time, the shallower part at the tail end of the locking hole 21 slides to the position of the locking bead 42, and then the operation of compressing the locking bead 42 inward can be realized until the locking hole 21 is completely separated from the locking bead 42. At this time, the unlocking operation is completed.

[0042] A number of O-ring seals 11 are evenly installed on the inner wall of the docking port of the fixed pipe 1, and a number of annular sealing grooves 22 adapted to the O-ring seals 11 are evenly arranged on the outer wall of the docking port of the docking pipe head 2. This design further enhances the sealing performance of the joint.

[0043] Four guiding convex teeth 72 are evenly arranged on the inner side of the sliding limit rotating collar 7, and these guiding convex teeth are correspondingly slidably clamped inside four guiding rails 23 arranged on the outer wall of the docking pipe head 2. This design helps the stable sliding of the sliding limit rotating collar and does not rotate.

[0044] The docking operation process: Insert the front end of the docking pipe head 2 into the inside of the port of the fixed pipe 1, and rotate the docking pipe head 2 so that 8 locking beads 42 fall into the 8 locking holes 21 inside. Then slide the sliding limit rotating collar 7 to the bottom end so that 8 limit rotating positioning posts 6 are inserted into the limit rotating positioning holes 71 inside to complete the locking docking operation.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0046] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0047] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A leak-proof quick connector, comprising a fixed pipe (1) and a butt joint (2), characterized in that: The inner side of the docking port of the fixed pipe (1) is arranged in a stepped shape, the docking port of the docking pipe head (2) is arranged in a stepped shape adapted to the docking port of the fixed pipe (1), an annular installation cavity (3) is arranged inside the inner wall of the docking port of the fixed pipe (1), a locking assembly (4) is installed inside the annular installation cavity (3), and the locking assembly (4) specifically comprises an elastic tensioning ring (41) distributed inside the annular installation cavity (3), 8 locking beads (42) evenly installed on the inner ring surface of the elastic tensioning ring (41), and 8 locking beads (42) arranged on the inner ring surface of the elastic tensioning ring (41). The fixed beads (42) pass through eight through holes (12) provided on the inner wall of the docking port of the fixed tube (1) and are clamped in the interior of eight locking holes (21) provided on the outer wall of the docking end of the docking pipe joint (2). An annular boss (5) is provided on the outside of the fixed tube (1) near the port, and eight rotation-limiting positioning columns (6) are evenly arranged on the upper end surface of the annular boss (5). A sliding rotation-limiting collar (7) is slidably sleeved on the outer side of the docking pipe joint (2), and eight rotation-limiting positioning holes (71) are evenly arranged on the lower end surface of the sliding rotation-limiting collar (7).

2. The anti-leakage quick connector according to claim 1, characterized in that: The eight rotation-limiting positioning columns (6) are correspondingly inserted into the interior of eight rotation-limiting positioning holes (71) provided on the lower end surface of the sliding rotation-limiting collar (7) in a docking state.

3. The anti-leakage quick connector according to claim 2, characterized in that: The top end of each rotation-limiting positioning column (6) is configured to be round-headed.

4. The anti-leakage quick connector according to claim 1, characterized in that: The inner hole shape of the locking hole (21) is arranged to be a half water drop shape distributed horizontally.

5. The anti-leakage quick connector according to claim 1, characterized in that: A plurality of O-type sealing rings (11) are evenly installed on the inner wall of the docking port of the fixed pipe (1), and a plurality of annular sealing grooves (22) matching the O-type sealing rings (11) are evenly arranged on the outer wall of the docking port of the docking pipe head (2).

6. The anti-leakage quick connector according to claim 1, characterized in that: Four guide protruding teeth (72) are evenly arranged on the inner side of the sliding rotation-limiting collar (7), and the four guide protruding teeth (72) are correspondingly slidably engaged with the inside of four guide rails (23) arranged on the outer tube wall of the butt joint (2).

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