Male quick-connect fittings for fluid applications

Abstract

This utility model relates to a quick-connect and disconnection device, particularly a male quick-connect fluid connector. The male quick-connect fluid connector includes a plug, a plug connector body fitted onto the outer rear wall of the plug, a plug valve core mounted on the inner front wall of the plug, a plug valve core spring between the plug connector body and the plug valve core, and a backstop groove on the outer wall of the middle part of the plug. The front part of the plug valve core is an annular body a, with a recessed area in the middle, where a valve core O-ring a is located. Spring blocks are located above and below the rear side of the annular body a, with a limiting step on the outer side of the spring blocks. A flow-guiding boss, shaped like a frustum, is located between the spring blocks, with flow-guiding slopes on both sides of its outer wall. The advantages of this utility model are: the plug connector body in the plug functions as a valve seat, the plug valve core spring is located inside the convex ring, the flow-guiding boss prevents structural instability caused by long-term erosion, and the fluid is smoothly diverted and depressurized through the frustum outer wall and the flow-guiding slopes.

Description

Technical Field

[0001] This utility model relates to a quick-connection device, especially a male connector for quick fluid couplings. Background Technology

[0002] Quick couplings, including hydraulic quick couplings and various fluid quick couplings, are connection devices that quickly connect or disconnect pipelines, enabling rapid assembly and disassembly. Because quick couplings have a bidirectional check valve function, preventing leakage when the pipeline is disconnected, they are widely used in petroleum, metallurgy, hydropower, engineering machinery, shipbuilding, and electromechanical equipment industries. The connection structure of a quick coupling is its most important part; its connection method and structure directly determine the ease of use, reliability, and product quality. Quick couplings consist of two parts: a female connector and a male connector. Existing structures often have valve cores subjected to high impact forces, which may affect the performance and safety of the quick coupling. Summary of the Invention

[0003] To address the technical problem of high impact force on the valve core, this utility model provides a male connector for quick fluid couplings.

[0004] The technical solution of this utility model is as follows:

[0005] A male quick-connector for fluids includes a plug, a plug connector body fitted on the outer rear wall of the plug, a plug valve core on the inner front wall of the plug, a plug valve core spring between the plug connector body and the plug valve core, a backstop groove on the outer middle wall of the plug, the front part of the plug valve core is an annular body a, the annular body a has a recess in the middle, a valve core O-ring a is located in the recess, spring blocks are located on the upper and lower rear sides of the annular body a, a limiting step is located on the outer side of the spring blocks, a flow guide boss is located between the spring blocks, the flow guide boss is frustum shaped, and flow guide slopes are located on the outer walls of both sides of the flow guide boss.

[0006] The inner diameter of the plug connector body is smaller than the inner diameter of the rear inner wall of the plug. The plug connector body protrudes inward to form a convex ring. A plug valve core spring is provided inside the convex ring. The plug connector body is Z-shaped. A recess is provided at the right angle of the inner wall. An O-ring of the plug connector body is provided at the recess. An expanded inner wall is provided on the front inner wall of the plug. The expanded inner wall is located between the plug valve core and the rear inner wall.

[0007] The technical solution of this utility model has a novel structure and a clever and simple design. The plug connector body in the plug is used as a valve seat. The inner side of the convex ring is equipped with a plug valve core spring. The flow guide protrusion avoids structural instability caused by long-term scouring in this area. The fluid is smoothly diverted and depressurized through the outer wall of the truncated cone and the flow guide slope. The steel ball locking method achieves locking and unlocking by pushing and pulling. It is easy to operate. It can maintain a seal in both the plugged and unplugged states, with no leakage, and is safe and reliable. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 , 3 4 and 5 are schematic diagrams of the plug valve core in this utility model;

[0010] Figure 6 This is a schematic diagram of the structure of this utility model used in conjunction with a female connector;

[0011] Figure 7 This is a structural diagram of a female connector;

[0012] Figure 8 , 9 This is a schematic diagram of the valve core structure. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0014] like Figure 1 , 2 The male quick-connect fluid couplings shown in Figures 3, 4, and 5 include a plug 2, a plug connector body 8 fitted onto the rear outer wall of the plug 2, a plug valve core 6 provided on the front inner wall of the plug 2, a plug valve core spring 15 provided between the plug connector body 8 and the plug valve core 6, and a backlash groove provided on the middle outer wall of the plug 2.

[0015] The inner diameter of the plug connector body 8 is smaller than the inner diameter of the rear inner wall of the plug 2. The plug connector body 8 protrudes inward to form a convex ring. A plug valve core spring 15 is provided inside the convex ring. The plug connector body 8 is Z-shaped. A recess is provided at the right angle of the inner wall. A plug connector body O-ring 17 is provided at the recess. An expanded inner wall is provided on the front inner wall of the plug 2. The expanded inner wall is located between the plug valve core 6 and the rear inner wall.

[0016] The front part of the plug valve core 6 is an annular body a19, with a recess in the middle of the annular body a19. The valve core O-ring a9 is located in the recess. Spring blocks 20 are located on the upper and lower sides of the rear side of the annular body a19. Limiting steps are provided on the outer side of the spring blocks 20. A flow guide boss 21 is provided between the spring blocks 20. The flow guide boss 21 is frustum-shaped. Flow guide slopes 22 are provided on the outer walls of both sides of the flow guide boss 21.

[0017] like Figure 6 , 7As shown in Figures 8 and 9, in use, the female connector includes a housing 1 and an outer sleeve 3. A housing connector body 5 is fitted onto the rear outer wall of the housing 1, and an outer sleeve 3 is fitted onto the front outer wall of the housing 1. The outer sleeve 3 is connected to a steel ball 12, which resides in a through hole in the housing 1. An outer sleeve spring 16 is provided between the housing connector body 5 and the outer sleeve 3. A housing valve core 4 is provided at the connection between the housing 1 and the housing connector body 5. A bushing 7 is provided between the housing valve core 4 and the housing 1. A housing valve core spring 14 is provided between the bushing 7 and the rear of the housing valve core 4. An outer sleeve retaining ring 13 is provided on the front outer wall of the housing 1. A housing connector body O-ring 11 is recessed in the middle inner wall of the housing connector body 5. The housing 1 is located outside the housing connector body O-ring a11. A housing connector body O-ring b18 is provided on the rear side of the middle outer wall of the housing connector body 5. The front part of the housing valve core 4 is an annular body b23, which is connected to a fluid orifice seat 24 via a straight rod. The orifice seat 24 has a fluid hole in the ring. A guide slope a25 is opened on the outside of the fluid hole, and a guide slope b26 is opened on the inside. A boss is formed at the rear of the fluid hole seat 24, and the guide slope b26 is on the outer wall of the boss. The plug 2 pushes the bushing 7, and the housing valve core 4 and the plug valve core 6 contact each other, opening the flow channel in the expansion inner wall section. The guide slope b26 extends outward through the expansion inner wall section, which easily increases the fluid velocity. The fluid hole seat increases the number of flow channel holes. The guide boss has a thickness increase weight balance and impact resistance. The guide boss avoids structural instability caused by long-term scouring in this area. The fluid is smoothly introduced through the outer wall of the frustum and the guide slope. The housing material and galvanized layer have wear resistance and corrosion resistance. The plane is anti-pollution and has a leak-free structure. The fluid connector and management and cold plate installation are diverse. It is suitable for vehicle, ship, and ground environments. It is mainly used in the liquid cooling heat dissipation system of radar equipment, wind power converter cabinet, and supercomputer.

[0018] It should be understood that the above description is only a preferred embodiment of the present utility model and is not sufficient to limit the technical solution of the present utility model. For those skilled in the art, within the spirit and principles of the present utility model, additions, subtractions, substitutions, transformations or improvements can be made based on the above description, and all such additions, subtractions, substitutions or improvements should fall within the protection scope of the appended claims of the present utility model.

Claims

1. Male connector for fluid quick connectors, comprising a plug (2), characterized in that: The plug (2) is fitted with a plug connector body (8) on the outer wall of the rear part, and a plug valve core (6) is provided on the inner wall of the front part of the plug (2). A plug valve core spring (15) is provided between the plug connector body (8) and the plug valve core (6). A backstop groove is provided on the outer wall of the middle part of the plug (2). The front part of the plug valve core (6) is an annular body a (19). A recess is provided in the middle of the annular body a (19). A valve core O-ring a (9) is provided in the recess. Spring blocks (20) are provided on the upper and lower sides of the rear side of the annular body a (19). A limiting step is provided on the outer side of the spring blocks (20). A flow guide boss (21) is provided between the spring blocks (20). The flow guide boss (21) is frustum-shaped. Flow guide slopes (22) are provided on the outer walls of both sides of the flow guide boss (21).

2. The male connector for fluid quick couplings according to claim 1, characterized in that: The inner diameter of the plug connector body (8) is smaller than the inner diameter of the rear inner wall of the plug (2). The plug connector body (8) protrudes inward to form a convex ring. A plug valve core spring (15) is provided inside the convex ring. The plug connector body (8) is Z-shaped. A recess is provided at the right angle of the inner wall. A plug connector body O-ring (17) is provided at the recess. An expanded inner wall is provided on the front inner wall of the plug (2). The expanded inner wall is located between the plug valve core (6) and the rear inner wall.

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