Fluid connector

Abstract

The utility model discloses a fluid connector comprising a plug housing and a socket housing, the plug housing is internally provided with an axially extending sleeve, an annular gap is arranged between the inner wall of the plug housing and the outer wall of the sleeve, the sleeve is internally provided with an axially penetrating flow guide hole, the flow guide hole is internally provided with a sealing block and an elastic member, and the sealing block and the elastic member are arranged in the socket housing. The elastic piece can push the sealing block towards the head end so that the sealing block can block the head end opening of the flow guide hole, the tail end of the socket shell is provided with a sealing rod protruding outwards, and when the tail end of the socket shell is connected with the head end of the plug shell, the sealing rod can push the sealing block to move towards the tail end so that the sealing block can be separated from the head end opening of the flow guide hole. The plug shell is provided with a self-sealing structure, self-sealing is formed when the plug shell is not used, frequent mounting and dismounting are avoided, abrasion of parts is reduced, the service life is prolonged, the equipment maintenance cost is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a fluid connector. Background Art

[0002] Fluid connectors are widely used in various technical fields, including a plug housing and a socket housing, and the conduction function is realized by connecting the two with each other. In the prior art, when the plug housing and the socket housing are in a separated state, it is necessary to seal the plug housing to prevent leakage. In order to achieve a closed state and become a conductive state after connecting to the socket housing, a detachable plugging mechanism is provided, which results in a complex connector structure and more components. Moreover, the frequent installation and disassembly of the plugging mechanism cause wear of the components and reduce the service life.

[0003] Furthermore, when the plug housing and the socket housing are in a separated state, dust and foreign objects easily enter the gaps of the plug housing, affecting the normal use of the equipment.

[0004] Therefore, how to provide a fluid connector with a self-sealing structure is a technical problem that those skilled in the art need to solve at present. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fluid connector, through the action of a sealing block and an elastic member, the sealing block plugs the diversion hole in the separated state, realizing the self-sealing of the plug housing, avoiding frequent installation and disassembly, reducing wear of the components, and extending the service life.

[0006] To solve the above technical problems, the utility model provides a fluid connector, including a plug housing and a socket housing. An axially extending sleeve is arranged inside the plug housing. An annular gap is arranged between the inner wall of the plug housing and the outer wall of the sleeve. A diversion hole axially penetrating is arranged inside the sleeve. A sealing block and an elastic member are installed in the diversion hole. The elastic member can push the sealing block towards the first end, so that the sealing block plugs the first-end opening of the diversion hole. A sealing rod protruding outwards is arranged at the end of the socket housing. When the end of the socket housing is connected to the first end of the plug housing, the sealing rod can push the sealing block towards the second end, so that the sealing block separates from the first-end opening of the diversion hole.

[0007] Preferably, the first ends of the inner wall of the diversion hole and the first end of the sealing block are both provided with conical surfaces that converge towards the first end and match each other. When the socket housing separates from the plug housing, the conical surface of the sealing block is hermetically attached to the conical surface of the inner wall of the diversion hole.

[0008] Preferably, the diameter of the end of the inner wall of the diversion hole matches the diameter of the cylindrical end of the sealing block, and a diversion groove extending axially is arranged on the outer wall of the end of the sealing block.

[0009] Preferably, an annular groove is provided in the middle of the conical surface of the sealing block, and a movable sealing ring is installed in the annular groove, and the movable sealing ring can closely contact the conical surface of the inner wall of the diversion hole.

[0010] Preferably, when the socket housing separates from the plug housing, the plane at the head end of the sealing block is flush with the plane at the head end of the sleeve.

[0011] Preferably, the elastic member is specifically a spring, and a gasket and a snap ring are provided at the end of the spring.

[0012] Preferably, a connecting sleeve is provided at the end of the socket housing, an internal thread is provided on the inner wall of the plug housing, an external thread is provided on the outer wall of the connecting sleeve, the connecting sleeve is inserted into the annular gap and is threadedly connected, and a fixed sealing ring surrounding the sealing rod is provided at the end of the socket housing, and the fixed sealing ring presses the plane at the head end of the sleeve.

[0013] Preferably, a fixing nut is threadedly connected to the outer periphery of the end of the plug housing, and a tightening nut is threadedly connected to the outer periphery of the head end of the socket housing.

[0014] Preferably, a dust cover is further included, a dust cover is provided at the end of the dust cover, when the socket housing separates from the plug housing, the dust cover is embedded in the annular gap and wraps the head end of the sleeve, and the dust cover covers the diversion hole and the annular gap.

[0015] Preferably, a positioning groove is provided on the outer wall of the end of the sleeve, a positioning block is provided on the inner wall of the end of the dust cover, the positioning block is embedded in the positioning groove, and an extension part is provided at the edge of the dust cover.

[0016] The utility model provides a fluid connector, which includes a plug housing and a socket housing. An axially extending sleeve is provided inside the plug housing. An annular gap is provided between the inner wall of the plug housing and the outer wall of the sleeve. A diversion hole axially penetrating through is provided inside the sleeve. A sealing block and an elastic member are installed in the diversion hole. The elastic member can push the sealing block towards the head end so that the sealing block blocks the head end opening of the diversion hole. A sealing rod protruding outwards is provided at the end of the socket housing. When the end of the socket housing is connected to the head end of the plug housing, the sealing rod can push the sealing block towards the tail end so that the sealing block separates from the head end opening of the diversion hole.

[0017] When the plug housing and the socket housing are separated, the elastic member pushes the sealing block towards the head end and blocks the diversion hole, so that the plug housing is closed. When the plug housing and the socket housing are combined, the sealing rod pushes the sealing block towards the tail end, so that the diversion hole becomes a conducting state. The plug housing has a self-sealing structure, forms self-sealing when the plug housing is not in use, avoids frequent installation and disassembly, reduces wear of components, extends service life, reduces equipment maintenance cost, and improves work efficiency. Brief Description of the Drawings

[0018] Figure 1 It is a schematic internal structure diagram of a specific embodiment of the fluid connector provided by the present utility model;

[0019] Figure 2 It is a schematic external structure diagram of a specific embodiment of the fluid connector provided by the present utility model;

[0020] Figure 3 It is an exploded view of a specific embodiment of the fluid connector provided by the present utility model;

[0021] Figure 4 It is a diagram showing the closed state of the plug housing in a specific embodiment of the fluid connector provided by the present utility model;

[0022] Figure 5 It is a schematic structure diagram of the plug housing in a specific embodiment of the fluid connector provided by the present utility model;

[0023] Figure 6 It is an installation diagram of the dust cap in a specific embodiment of the fluid connector provided by the present utility model.

[0024] Wherein, the plug housing 1, socket housing 2, sleeve 3, annular gap 4, diversion hole 5, sealing block 6, sealing rod 7, movable sealing ring 8, spring 9, gasket 10, snap ring 11, connecting sleeve 12, fixed sealing ring 13, fixed nut 14, tightening nut 15, dust cap 16, dust cover 17, extension part 18. Specific Embodiment

[0025] The core of the present utility model is to provide a fluid connector. Through the action of the sealing block and the elastic member, the sealing block in the separated state blocks the diversion hole, realizing the self-sealing of the plug housing, avoiding frequent installation and disassembly, reducing the wear of components, and prolonging the service life.

[0026] In order to enable those skilled in the art to better understand the solution of the present utility model, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0027] Please refer to Figures 1 to 6 , Figure 1 It is a schematic internal structure diagram of a specific embodiment of the fluid connector provided by the present utility model; Figure 2 It is a schematic external structure diagram of a specific embodiment of the fluid connector provided by the present utility model; Figure 3 It is an exploded view of a specific embodiment of the fluid connector provided by the present utility model; Figure 4Schematic diagram of the closed state of the plug housing in a specific embodiment of the fluid connector provided by the present utility model; Figure 5 Schematic diagram of the structure of the plug housing in a specific embodiment of the fluid connector provided by the present utility model; Figure 6 Installation schematic diagram of the dust cover in a specific embodiment of the fluid connector provided by the present utility model.

[0028] A specific embodiment of the present utility model provides a fluid connector, which includes a plug housing 1 and a socket housing 2. In the overall structure, one end of the socket housing 2 is the head end, and one end of the plug housing 1 is the tail end. For each component, the end close to the socket housing 2 is the head end, and the opposite end is the tail end. The end close to the plug housing 1 is the tail end, and the opposite end is the head end. In the drawings, the upper part is the head end and the lower part is the tail end. An axially extending sleeve 3 is arranged inside the plug housing 1. The head end of the plug housing 1 is open, and the tail end is closed by a bottom plate, forming a box structure with an open upper end. The sleeve 3 is arranged inside the box structure. An annular gap 4 is arranged between the inner wall of the plug housing 1 and the outer wall of the sleeve 3. An axially penetrating diversion hole 5 is arranged inside the sleeve 3. The diversion hole 5 also penetrates the bottom plate of the plug housing 1. A sealing block 6 and an elastic member are installed in the diversion hole 5. The elastic member can push the sealing block 6 towards the head end to block the head end opening of the diversion hole 5. A sealing rod 7 protruding outwards is arranged at the tail end of the socket housing 2. When the tail end of the socket housing 2 is connected to the head end of the plug housing 1, the sealing rod 7 is aligned with the sealing block 6 and pushes the sealing block 6 towards the tail end, so that the sealing block 6 separates from the head end opening of the diversion hole 5, and then the diversion hole 5 conducts the through-hole structure inside the plug housing 1.

[0029] When the plug housing 1 and the socket housing 2 are separated, the elastic member pushes the sealing block 6 towards the head end to block the diversion hole 5, closing the plug housing 1. When the plug housing 1 and the socket housing 2 are combined, the sealing rod 7 pushes the sealing block 6 towards the tail end, making the diversion hole 5 in a conducting state. The plug housing 1 has a self-sealing structure, forming self-sealing when the plug housing 1 is not in use, avoiding frequent installation and disassembly, reducing wear of components, extending service life, reducing equipment maintenance costs, and improving work efficiency.

[0030] To achieve the sealing effect of the sealing block 6, the head end of the sealing block 6 is a frustum structure, that is, a conical surface that converges towards the head end is arranged at the head end of the sealing block 6. Similarly, a conical surface that converges towards the head end is arranged at the inner wall of the head end of the diversion hole 5. The two conical surfaces match each other. When the socket housing 2 is separated from the plug housing 1, the elastic member pushes the sealing block 6 towards the head end, and the conical surface of the sealing block 6 is hermetically attached to the conical surface of the inner wall of the diversion hole 5 to block the diversion hole 5, forming a self-sealing structure. Among them, when the socket housing 2 is separated from the plug housing 1, the head end plane of the sealing block 6 is flush with the head end plane of the sleeve 3.

[0031] Meanwhile, the end of the sealing block 6 is of a cylindrical structure, and the diameter of the inner wall end of the diversion hole 5 matches the diameter of the cylindrical end of the sealing block 6. At the same time, in order for the diversion hole 5 to conduct normally, an axially extending diversion groove is provided on the outer wall of the end of the sealing block 6. Specifically, a plurality of diversion grooves can be evenly arranged. After the sealing block 6 is pushed to the end, the two conical surfaces are separated from each other, and the fluid can pass through the gap between the two conical surfaces and the diversion groove to achieve a conducting state.

[0032] Furthermore, an annular groove is provided in the middle of the conical surface of the sealing block 6, and a movable sealing ring 8 is installed in the annular groove. The movable sealing ring 8 can closely contact the conical surface of the inner wall of the diversion hole 5 to ensure the sealing effect.

[0033] The elastic member is specifically a spring 9. A gasket 10 and a snap ring 11 are provided at the end of the spring 9, and the spring 9 is fixed to the end of the diversion hole 5 through the snap ring 11. A gasket 10 is provided at the head end of the snap ring 11, and both ends of the spring 9 are abutted against the sealing block 6 and the gasket 10 respectively. The structure of the elastic member can also be adjusted according to the situation, which is within the protection scope of the present utility model.

[0034] In the fluid connector provided by the specific embodiment of the present utility model, in order to realize the connection between the plug housing 1 and the socket housing 2, a connection sleeve 12 is provided at the end of the socket housing 2. An internal thread is provided on the inner wall of the plug housing 1, and an external thread is provided on the outer wall of the connection sleeve 12. During installation, the connection sleeve 12 is inserted into the annular gap 4 and rotated for threaded connection. At the same time, a fixed sealing ring 13 surrounding the sealing rod 7 is provided at the end of the socket housing 2. The fixed sealing ring 13 presses the first end plane of the sleeve 3, so that after the plug housing 1 and the socket housing 2 are connected, a communicating structure is formed. And the protection level of the sealing device can be detected through the pressure difference to determine whether the sealing device leaks.

[0035] Furthermore, a fixing nut 14 is threadedly connected to the outer periphery of the end of the plug housing 1, and a tightening nut 15 is threadedly connected to the outer periphery of the first end of the socket housing 2. A platform structure is provided on the external thread to prevent the plug housing 1 from rotating by itself when the socket housing 2 is matched with the plug housing 1.

[0036] The connection method can be adjusted according to the situation, such as using a clamping connection method, etc., which is within the protection scope of the present utility model.

[0037] On the basis of the fluid connector provided by the above specific embodiments, a dust cover 16 is further included. A dust cover 17 is provided at the end of the dust cover 16. When the socket housing 2 is separated from the plug housing 1, the dust cover 17 is embedded in the annular gap 4 and wraps the first end of the sleeve 3, and the dust cover 16 covers the diversion hole 5 and the annular gap 4. It can prevent dust and foreign matters from entering, reduce unnecessary internal wear, and better protect the cleanliness and integrity of the internal thread of the plug housing 1.

[0038] Further, a positioning groove is provided on the outer wall of the end of the sleeve 3, and a positioning block is provided on the inner wall of the end of the dust cover 17. The positioning block is embedded in the positioning groove. Specifically, the positioning groove is an annular groove, and the positioning block is an annular protrusion. The two are stably matched to prevent the dust cover 16 from falling off. An extension part 18 is provided at the edge of the dust cover 16. One end of the extension part 18 is connected to the dust cover 16, and the other end is provided with a bend, which is convenient for disassembling the dust cover 16. Pulling the extension part 18 can separate the dust cover 16 from the plug housing 1.

[0039] The above provides a detailed introduction to the fluid connector provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A fluid connector, comprising a plug housing (1) and a socket housing (2), characterized in that: An axially extending sleeve (3) is arranged inside the plug housing (1); an annular gap (4) is arranged between the inner wall of the plug housing (1) and the outer wall of the sleeve (3); an axially penetrating flow guide hole (5) is arranged inside the sleeve (3); a sealing block (6) and an elastic member are installed in the flow guide hole (5); the elastic member is capable of pushing the sealing block (6) toward the head end so that the sealing block (6) blocks the head end opening of the flow guide hole (5); a sealing rod (7) protruding outward is arranged at the end of the socket housing (2); when the end of the socket housing (2) is connected to the head end of the plug housing (1), the sealing rod (7) is capable of pushing the sealing block (6) toward the end so that the sealing block (6) separates the head end opening of the flow guide hole (5).

2. The fluid connector according to claim 1, characterized in that: The head end of the inner wall of the guide hole (5) and the head end of the sealing block (6) are both provided with conical surfaces that converge toward the head ends and match each other, and when the socket housing (2) is separated from the plug housing (1), the conical surface of the sealing block (6) seals tightly against the conical surface of the inner wall of the guide hole (5).

3. The fluid connector according to claim 2, characterized in that: The diameter of the end of the inner wall of the guide hole (5) matches the diameter of the cylinder at the end of the sealing block (6), and the outer wall at the end of the sealing block (6) is provided with an axially extending guide groove.

4. The fluid connector according to claim 3, characterized in that: An annular groove is provided in the middle of the conical surface of the sealing block (6), and a movable sealing ring (8) is installed in the annular groove. The movable sealing ring (8) can closely contact the conical surface of the inner wall of the guide hole (5).

5. The fluid connector according to claim 4, characterized in that: When the socket housing (2) is separated from the plug housing (1), the front end plane of the sealing block (6) is flush with the front end plane of the sleeve (3).

6. The fluid connector according to claim 5, characterized in that: The elastic member is specifically a spring (9), and a gasket (10) and a retaining spring (11) are provided at the end of the spring (9).

7. The fluid connector according to claim 1, characterized in that: A connecting sleeve (12) is provided at the end of the socket housing (2), an inner wall of the plug housing (1) is provided with an internal thread, an outer wall of the connecting sleeve (12) is provided with an external thread, the connecting sleeve (12) is inserted into the annular gap (4) and threadedly connected, and a fixed sealing ring (13) surrounding the sealing rod (7) is provided at the end of the socket housing (2), the fixed sealing ring (13) pressing the front end plane of the sleeve (3).

8. The fluid connector according to claim 7, characterized in that: The outer periphery of the end of the plug housing (1) is threadedly connected to a fixing nut (14), and the outer periphery of the head end of the socket housing (2) is threadedly connected to a locking nut (15).

9. The fluid connector according to any one of claims 1 to 8, characterized in that: It also comprises a dust cover (16), the end of which is provided with a dust sleeve (17); when the socket housing (2) is separated from the plug housing (1), the dust sleeve (17) is embedded in the annular gap (4) and wraps around the head end of the sleeve (3); the dust cover (16) covers the guide hole (5) and the annular gap (4).

10. The fluid connector according to claim 9, characterized in that: A positioning groove is provided on the outer wall of the end of the sleeve (3), a positioning block is provided on the inner wall of the end of the dust cover (17), the positioning block is embedded in the positioning groove, and an extension portion (18) is provided at the edge of the dust cover (16).

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