Fluid quick connector

Abstract

This utility model relates to a quick-connect and disconnection device, particularly a fluid quick connector. The fluid quick connector includes a male connector and a female connector. The male connector includes a plug, a plug connector body fitted onto the rear outer wall of the plug, a plug valve core fitted onto the front inner 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 middle outer wall of the plug. The female connector includes a housing and an outer sleeve, a housing connector body fitted onto the rear outer wall of the housing, and an outer sleeve fitted onto the front outer wall of the housing. The outer sleeve is connected to a steel ball, which resides in a through hole in the housing. A housing valve core is located at the connection between the housing and the housing connector body. 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 valve core and valve seat in the housing are essentially integrated designs; the fluid orifice seat increases the number of flow channel holes; the guide protrusion prevents long-term erosion from causing structural instability; and the fluid is smoothly introduced through the outer wall of the frustum and the guide slope.

Description

Technical Field

[0001] This utility model relates to a quick-connection device, especially a fluid quick connector. 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 typically include a valve seat and a valve core, but inadequate design can easily lead to damage to these components by fluid erosion, potentially affecting the quick coupling's performance and safety. Summary of the Invention

[0003] To address the aforementioned technical problems caused by unreasonable design, this utility model provides a quick fluid coupling.

[0004] The technical solution of this utility model is as follows: A fluid quick connector includes a male connector and a female connector. The male connector includes a plug, a plug connector body is fitted on the rear outer wall of the plug, a plug valve core is fitted on the front inner wall of the plug, a plug valve core spring is provided between the plug connector body and the plug valve core, and a backstop groove is provided on the middle outer wall of the plug. The female connector includes a housing and an outer sleeve, a housing connector body is fitted on the rear outer wall of the housing, an outer sleeve is fitted on the front outer wall of the housing, the outer sleeve is connected to a steel ball, the steel ball is in a through hole in the housing, an outer sleeve spring is provided between the housing connector body and the outer sleeve, a housing valve core is provided at the connection between the housing and the housing connector body, a bushing is provided between the housing valve core and the housing, and a housing valve core spring is provided between the bushing and the rear of the housing valve core.

[0005] 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. The inner wall of the convex ring is a smooth wall. The rear side of the smooth wall is an inclined wall d.

[0006] The front part of the plug valve core is an annular body a, with a recess in the middle of the annular body a. A valve core O-ring a is located in the recess. Spring blocks are located on the upper and lower sides of the rear side of the annular body a. A limiting step is provided on the outer side of the spring blocks. A flow guide protrusion is provided between the spring blocks. The flow guide protrusion is frustum-shaped. Flow guide slopes are provided on the outer walls of both sides of the flow guide protrusion.

[0007] The outer wall of the front end of the housing is provided with an outer retaining ring, the inner wall of the middle of the housing connector is recessed with a housing connector O-ring a, the outer side of the housing connector O-ring a is provided with a housing, and the rear side of the outer wall of the middle of the housing connector is provided with a housing connector O-ring b.

[0008] The front part of the valve core is an annular body b, which is connected to the fluid orifice seat through a straight rod. The fluid orifice seat has a fluid orifice in the annular shape, and a guide wall a is opened on the outer side of the fluid orifice and a guide wall b is opened on the inner side. A boss is formed at the rear of the fluid orifice seat, and the guide wall b is on the outer wall of the boss.

[0009] The inner wall of the housing connector is provided with a convex wall, the outer side of which is an inclined wall a, and the inner side is an inclined wall b. The front part of the inclined wall b is located behind the flow guiding inclined wall a. The convex wall is aligned with the fluid hole. The inner wall of the rear part of the bushing is provided with an inclined wall c. The outer wall of the rear part of the bushing is in contact with the inner wall of the housing.

[0010] 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 valve core and valve seat in the housing are equivalent to an integrated design. The fluid hole seat increases the number of flow channel holes. The flow guide boss avoids the structural instability caused by long-term scouring in this area. The fluid is smoothly introduced 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, which is convenient to operate. It can maintain a seal in both the plugged and unlocked states, with no leakage, and is safe and reliable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the male connector of this utility model; Figure 3 This is a schematic diagram of the structure of the female connector of this utility model; Figure 4 , 5 6 and 7 are schematic diagrams of the plug valve core in this utility model; Figure 8 , 9 This is a schematic diagram of the structure of the housing valve core in this utility model. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0013] like Figure 1 , 2The fluid quick connectors shown in 3, 4, 5, 6, 7, 8, and 9 include a male connector and a female connector. The male connector includes a plug 2, a plug connector body 8 is fitted on the rear outer wall of the plug 2, a plug valve core 6 is fitted on the front inner wall of the plug 2, a plug valve core spring 15 is provided between the plug connector body 8 and the plug valve core 6, and a backstop groove is provided on the middle outer wall of the plug 2. The female connector includes a housing 1 and an outer sleeve 3, a housing connector body 5 is fitted on the rear outer wall of the housing 1, an outer sleeve 3 is fitted on the front outer wall of the housing 1, the outer sleeve 3 is connected to a steel ball 12, the steel ball 12 is in the through hole of 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, and a housing valve core spring 14 is provided between the bushing 7 and the rear of the housing valve core 4.

[0014] The inner diameter of the plug connector body 8 is smaller than the inner diameter of the rear part 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. A section of 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. The inner wall of the convex ring is a smooth wall. The rear side of the smooth wall is an inclined wall d.

[0015] 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.

[0016] The outer wall of the front end of the housing 1 is provided with an outer retaining ring 13, the inner wall of the housing connector 5 is recessed and provided with a housing connector O-ring a11, the outer side of the housing connector O-ring a11 is provided with the housing 1, and the rear side of the outer wall of the middle part of the housing connector 5 is provided with a housing connector O-ring b18.

[0017] The front part of the housing valve core 4 is an annular body b23, which is connected to the fluid orifice seat 24 through a straight rod. The fluid orifice seat 24 has a fluid orifice in the annular shape. A guide wall a25 is opened on the outer side of the fluid orifice, and a guide wall b26 is opened on the inner side. A boss is formed at the rear of the fluid orifice seat 24, and the guide wall b26 is on the outer wall of the boss.

[0018] The inner wall of the housing connector 5 is provided with a convex wall 27, the outer side of the convex wall 27 is an inclined wall a, and the inner side is an inclined wall b31. The front part of the inclined wall b31 is located behind the flow guiding inclined wall a25. The convex wall 27 is aligned with the fluid hole. The rear inner wall of the bushing 7 is provided with an inclined wall c30. The rear outer wall of the bushing 7 is in contact with the inner wall of the housing 1.

[0019] During use, plug 2 pushes bushing 7, and the housing valve core 4 and 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, easily increasing the fluid velocity. The fluid orifice seat increases the number of flow channel holes. The guide boss avoids structural instability caused by long-term scouring in this area. The flow path from the inner wall of the convex ring to the boss is straight, and the impact is large. The boss has a thickness to increase weight and balance the impact resistance. The guide boss has a small diameter and few contact surfaces, which facilitates the flow to be separated from the outer wall of the guide boss. There are many types of fluids, some with large impact forces. The bottom diameter of the guide boss is equal to the spring clip 20, and the outer wall of the spring clip 20 is... The curved surface, through the outer wall of the frustum and the guide slope, smoothly releases the fluid pressure, passing through the rear frustum of the annular body a19 to the inner wall of the expansion, from the outside to the inside, through the straight rod body to the bushing 7 inclined wall c30, the inclined wall c expands the area, through the fluid hole to the inclined wall b31, and finally to the convex wall 27. This route is a back-and-forth curved route with fast flow rate. The shell material and galvanized layer have wear resistance and corrosion resistance, flat anti-pollution, leak-free structure, fluid connectors and management, and cold plate installation are diverse. It is suitable for vehicle-mounted, ship-mounted and ground environments, and is mainly used in the liquid cooling heat dissipation system of radar equipment, wind power converter cabinets and supercomputers.

[0020] 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. A quick-connect fluid coupling, comprising a male coupling and a female coupling, characterized in that: The male connector includes a plug (2), a plug connector body (8) is fitted on the outer wall of the rear part of the plug (2), a plug valve core (6) is fitted 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), and a backstop groove is provided on the outer wall of the middle part of the plug (2). The female connector includes a housing (1) and an outer sleeve (3), a housing connector body (5) is fitted on the outer wall of the rear part of the housing (1), an outer sleeve (3) is fitted on the outer wall of the front part of the housing (1), the outer sleeve (3) is connected to a steel ball (12), the steel ball (12) is in the through hole of 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), and a housing valve core spring (14) is provided between the bushing (7) and the rear part of the housing valve core (4).

2. The fluid quick connector 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. An O-ring (17) of the plug connector body is provided at the recess. A section of 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. The inner wall of the convex ring is a smooth wall (28). The rear side of the smooth wall (28) is an inclined wall d.

3. The fluid quick connector according to claim 1, characterized in that: The front part of the plug valve core (6) is an annular body a (19), with a recess in the middle of the annular body a (19), and a valve core O-ring a (9) 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, and flow guide slopes (22) are provided on the outer walls of both sides of the flow guide boss (21).

4. The fluid quick connector according to claim 1, characterized in that: The outer wall of the front end of the shell (1) is provided with an outer retaining ring (13), the inner wall of the shell connector (5) is recessed and provided with a shell connector O-ring a (11), the outer side of the shell connector O-ring a (11) is provided with the shell (1), and the rear side of the outer wall of the middle part of the shell connector (5) is provided with a shell connector O-ring b (18).

5. The fluid quick connector according to claim 1, characterized in that: The front part of the housing valve core (4) is an annular body b (23), which is connected to the fluid hole seat (24) through a straight rod. The fluid hole seat (24) has a fluid hole in the annular shape. A guide wall a (25) is opened on the outside of the fluid hole, and a guide wall b (26) is opened on the inside. A boss is formed at the rear of the fluid hole seat (24), and the guide wall b (26) is on the outer wall of the boss.

6. The fluid quick connector according to claim 1, characterized in that: The inner wall of the housing connector (5) is provided with a convex wall (27), the outer side of the convex wall (27) is an inclined wall a, and the inner side is an inclined wall b (31). The front part of the inclined wall b (31) is located behind the flow guiding inclined wall a (25). The convex wall (27) is aligned with the fluid hole. The inner wall of the rear part of the bushing (7) is provided with an inclined wall c (30). The outer wall of the rear part of the bushing (7) is in contact with the inner wall of the housing (1).

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