Quick plug connector

Abstract

The utility model discloses a quick plug connector which comprises a socket and a plug, the socket is internally provided with a first sliding through groove, a second sliding through groove and a first liquid passing groove, the circumferential side wall of the first sliding through groove is slidably connected with a buffer valve element, the side end of the buffer valve element is provided with a second spring, and the side end of the second spring is fixedly connected with a socket valve element. A fixed check ring is arranged on the inner side wall of the first liquid passing groove, the fixed check ring and the blocking end are sealed, the outer side wall of the socket is rotationally connected with a connecting end cover, the connecting end cover is in threaded connection with the outer side wall of the plug, a plug valve element is arranged at the inner side end of the plug, and a movable check ring is slidably connected to the inner side wall of the plug. According to the utility model, the defects in the prior art are overcome, the design is reasonable, and the high social use value and application prospect are realized.

Description

Technical Field

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

[0002] Quick-connect fittings are widely used in the connection of high-pressure gas pipelines. They can connect or disconnect pipelines without the need for other tools, which has a significant impact on the safety and reliability of the system.

[0003] However, existing quick-connectors have the following problems during operation: if the gas pressure is high, the seal inside the plug will be subjected to a large instantaneous pressure when plugged in, which will affect the service life of the quick-connector. When disconnected, the plug is subjected to a large pressure and is easy to be thrown off when it is removed from the socket. To solve the above problems, a quick-connector that can avoid instantaneous pressure when the connector is connected is provided. Utility Model Content

[0004] In order to solve the problems mentioned in the background art, the present invention provides a quick-connect connector.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-connect connector includes a socket and a plug, characterized in that: the socket is provided with a first sliding groove, a second sliding groove and a first liquid passage groove; a buffer valve core is slidably connected to the circumferential side wall of the first sliding groove; a second spring is provided at the side end of the buffer valve core; a socket valve core is fixedly connected to the side end of the second spring; the side end of the socket valve core is a sealing end; a fixed retaining ring is provided on the inner side wall of the first liquid passage groove; the fixed retaining ring seals with the sealing end; a connecting end cap is rotatably connected to the outer side wall of the socket; a plug valve core is provided at the inner end of the plug; a movable retaining ring is slidably connected to the inner side wall of the plug; and a third spring is sleeved on the plug valve core.

[0007] Preferably, the socket valve core has a liquid-filled groove and a sealing end is provided on the side of the socket valve core.

[0008] Preferably, the buffer valve core has a second liquid passage groove at its end and a liquid outlet channel on its side wall.

[0009] Preferably, the plug valve core includes a support column and a valve core end. The support column is fixedly connected to the inner side wall end of the plug, and the valve core end is fixedly connected to the side end of the support column. The side end of the support column has an inlet groove, and the side wall of the support column has an outlet groove hole.

[0010] Preferably, a sealing ring is fixedly connected in the first sliding groove, a third spring is provided on the inner wall side of the plug, and an annular baffle is provided at the end of the third spring, with the annular baffle slidably connected to the support column.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When the socket and plug are connected, the second spring is compressed first. When the pressure on the second spring increases to a certain extent, it will push the buffer valve core to move. When the buffer valve core moves, the sealing state between the buffer valve core and the sealing ring is released, and the fluid can enter the socket. At this time, the seal between the socket valve core and the fixed retaining ring is released, and the fluid can flow into the plug. During the movement of the buffer valve core, the flow rate gradually increases, and the fixed retaining ring, the moving retaining ring, and the seals on them will not be subjected to instantaneous pressure pulses. When the socket and plug are separated, the buffer valve core moves first due to the restoring elastic potential energy of the first spring. At this time, the fluid flowing out of the liquid outlet channel gradually decreases until it is completely sealed, until the socket and plug are completely separated. During the separation of the socket and plug, the fluid inside the socket and plug will not cause leakage.

[0013] 2. When it is necessary to unplug the plug, rotate the connecting end cover to separate the socket from the plug. The second spring resets and drives the socket valve core to move. The third spring resets and drives the moving retaining ring to move. At this time, the socket valve core and the fixed retaining ring form a seal, thereby realizing the pressurized insertion and removal of the quick-connect connector without the need for additional valves, saving costs.

[0014] In summary, this utility model overcomes the shortcomings of the prior art, has a reasonable design, and can avoid the quick-connect connector's internal retaining ring and sealing ring being subjected to large instantaneous pressure. It has wide applicability and high social use value and application prospects. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the internal socket structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the socket valve core structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the buffer valve core structure of this utility model;

[0021] Figure 6 This is a cross-sectional view of the plug valve core of this utility model;

[0022] In the diagram: Socket 1, Liquid Inlet 101, First Spring 1011, First Sliding Through Groove 102, Second Sliding Through Groove 103, First Liquid Passing Groove 104, Socket Valve Core 11, Liquid Passing Groove 111, Fixing Groove 112, Sealing End 113, Buffer Valve Core 12, Sealing Ring 121, First Seal 122, Retaining Ring 123, Second Spring 124, Second Liquid Passing Groove 125, Liquid Outlet Channel 127, Fixing Retaining Ring 13, Second Seal 131, Connecting End Cap 14, Plug 2, Plug Valve Core 21, Support Column 211, Valve Core End 212, Liquid Inlet Groove 213, Liquid Outlet Groove Hole 214. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1

[0025] Reference Figure 1-6 A quick-connect connector includes a socket 1 and a plug 2. The socket 1 has a liquid inlet 101 near its side. Inside the socket 1, beside the liquid inlet 101, there are a first sliding groove 102, a second sliding groove 103, and a first liquid passage groove 104. A first spring 1011 is provided on the side wall of the first sliding groove 102. A buffer valve core 12 is slidably connected to the circumferential side wall of the first sliding groove 102. The side end of the first spring 1011 is fixedly connected to the buffer valve core 12. A second spring 124 is provided on the side end of the buffer valve core 12. A socket valve core 11 is slidably connected within the second sliding groove 103. The side end of the second spring 124 is fixedly connected to the socket valve core 11. The side end of the socket valve core 11 is sealed. At end 113, a fixed retaining ring 13 is provided on the inner side wall of the first liquid passage 104. A second sealing element 131 is provided on the fixed retaining ring 13. The fixed retaining ring 13 seals with the sealing end 113. A connecting end cover 14 is rotatably connected to the outer side wall of the socket 1. The connecting end cover 14 is threadedly connected to the outer side wall of the plug 2. An outlet is provided at the end of the plug 2. A plug valve core 21 is provided at the outlet on the inner side of the plug 2. A movable retaining ring 22 is slidably connected to the inner side wall of the plug 2. A third spring 222 is sleeved on the plug valve core 21. The end of the third spring 222 is fixedly connected to the side end of the movable retaining ring 22. A threaded housing 24 is rotatably connected to the circumferential side wall of the plug 2. The threaded housing 24 is threadedly connected to the outer side wall of the socket 1.

[0026] Connect socket 1 and plug 2. At this time, socket valve core 11 and plug valve core 21 abut against each other. The circumferential side wall of socket valve core 11 and fixed retaining ring 13 abut against and seal, and the side wall of plug valve core 21 and movable retaining ring 22 seal. At this time, socket 1 and plug 2 are not connected. Rotate the connecting end cover 14, and socket 1 and plug 2 can be brought closer to each other through threaded connection. The end of socket 1 pushes movable retaining ring 22 to move. At this time, the third spring 222 is in a compressed state. Plug valve core 21 pushes socket valve core 11 to move. At this time, the second spring 124 is in a compressed state. At this time, the circumferential side wall of socket valve core 11 and fixed retaining ring... When the sealing state of 13 and the sealing state of the side wall of the plug valve core 21 and the moving retaining ring 22 are released, the fluid enters the first sliding groove 102 from the liquid inlet 1, flows into the plug 2 through the first liquid passage groove 104, and then flows out through the liquid inlet groove 213. When it is necessary to unplug the plug, rotate the connecting end cover 14, and the socket 1 and the plug 2 are separated. The second spring 124 resets and drives the socket valve core 11 to move. The third spring 222 resets and drives the moving retaining ring 22 to move. At this time, the socket valve core 11 and the fixed retaining ring 13 form a seal, thereby realizing the pressurized insertion and removal of the quick-connect plug without the need to add a valve.

[0027] Furthermore, the buffer valve core 12 has a second liquid passage groove 125 at its end, and a liquid outlet channel 127 is opened on the side wall of the buffer valve core 12. The plug valve core 21 includes a support column 211 and a valve core end 212. The support column 211 is fixedly connected to the end of the inner side wall of the plug 2, and the valve core end 212 is fixedly connected to the side end of the support column 211. A liquid inlet groove 213 is opened on the side end of the support column 211, and a third guide slope 215 is provided at the bottom end of the liquid inlet groove 213. A liquid outlet groove hole 214 is provided on the side wall of the support column 211.

[0028] Fluid enters the first sliding channel 102, passes through the second liquid passage 125 into the buffer valve core 12, flows through the second sliding channel 103 to the first liquid passage 104, and then flows into the plug 2. It flows through the outlet channel hole 214 to the inlet channel 213, and then flows out from the inlet channel 213, thus connecting the connector.

[0029] Furthermore, a sealing ring 121 is fixedly connected inside the first sliding channel 102. The sealing ring 121 can seal the liquid outlet channel 127. A third spring 232 is provided on the inner wall side of the plug 2. An annular baffle 23 is provided at the end of the third spring 232. The annular baffle 23 is slidably connected to the support column 211 and is sealed to the liquid outlet hole 214.

[0030] When socket 1 and plug 2 are connected, the second spring 124 is first compressed by pressure. As the pressure on the second spring 124 increases to a certain extent, it will push the buffer valve core 12 to move. When the buffer valve core 12 moves, the fluid can enter the interior of socket 1. At this time, the seal between socket valve core 11 and fixed retaining ring 13 is released, and the fluid can flow into the interior of plug 2. During the movement of buffer valve core 12, the flow rate gradually increases. Fixed retaining ring 13, moving retaining ring 22 and the seals on it will not be subjected to instantaneous pressure pulses. When the socket 1 and plug 2 are separated, the buffer valve core 12 moves first under the restoring force of the first spring 1011. At this time, the fluid flowing out of the liquid outlet channel 127 gradually decreases until it is completely sealed. At this time, socket 1 and plug 2 are separated. At this time, the fluid in socket 1 and plug 2 will not cause leakage. Through this design, the retaining ring and seals can be protected, the service life of the quick connector can be improved, and fluid leakage can be avoided to a certain extent.

[0031] Working principle: The end of the socket 1 pushes the movable retaining ring 22 to move, and the plug valve core 21 pushes the socket valve core 11 to move. At this time, the circumferential side wall of the socket valve core 11 and the fixed retaining ring 13 are sealed, and the side wall of the plug valve core 21 and the movable retaining ring 22 are unsealed. The fluid enters the first sliding groove 102 from the liquid inlet 1, flows into the plug 2 through the first liquid passage groove 104, and then flows out through the liquid inlet groove 213. When it is necessary to unplug the plug, rotate the connecting end cover 14, and the socket 1 and the plug 2 are separated. The second spring 124 resets and drives the socket valve core 11 to move. The third spring 222 resets and drives the movable retaining ring 22 to move. At this time, the socket valve core 11 and the fixed retaining ring 13 form a seal, thereby realizing the pressure insertion and removal of the quick-connect connector.

[0032] When the socket 1 and plug 2 are disconnected, the buffer valve core 12 moves first under the restoring force of the first spring 1011. At this time, the fluid flowing out of the liquid outlet channel 127 gradually decreases until it is completely sealed. At this time, the socket 1 and plug 2 are separated, and the fluid in the socket 1 and plug 2 will not leak. When the socket 1 and plug 2 are connected, the second spring 124 is compressed first. When the pressure on the second spring 124 increases to a certain extent, it will push the buffer valve core 12 to move. When the buffer valve core 12 moves, the sealing state between the buffer valve core 12 and the sealing ring 121 is released. At this time, the fluid can enter the interior of the socket 1. At this time, the seal between the socket valve core 11 and the fixed retaining ring 13 is released, and the fluid can flow into the interior of the plug 2. During the movement of the buffer valve core 12, the flow rate gradually increases, and the fixed retaining ring 13, the moving retaining ring 22 and the seals thereon will not be subjected to instantaneous pressure pulses.

[0033] When the socket 1 and plug 2 are connected, the buffer valve core 12 moves first due to the restoring elastic potential energy of the first spring 1011. At this time, the fluid flowing out of the liquid outlet channel 127 gradually decreases until it is completely sealed, until the socket 1 and plug 2 are completely separated. During the separation process of the socket 1 and plug 2, the fluid in the socket 1 and plug 2 will not cause leakage.

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick-connect connector, comprising a socket (1) and a plug (2), characterized in that: The socket (1) is provided with a first sliding groove (102), a second sliding groove (103) and a first liquid passage groove (104). A buffer valve core (12) is slidably connected to the circumferential side wall of the first sliding groove (102). A second spring (124) is provided on the side end of the buffer valve core (12). A socket valve core (11) is fixedly connected to the side end of the second spring (124). The side end of the socket valve core (11) is a sealing end (113). A fixed retaining ring (13) is provided on the inner side wall of the first liquid passage groove (104). The fixed retaining ring (13) seals with the sealing end (113). A connecting end cap (14) is rotatably connected to the outer side wall of the socket (1). A plug valve core (21) is provided on the inner end of the plug (2). A movable retaining ring (22) is slidably connected to the inner side wall of the plug (2). A third spring (232) is sleeved on the plug valve core (21).

2. A quick-connect connector according to claim 1, characterized in that: The socket valve core (11) has a liquid-filled groove (111) and a sealing end (113) is provided on the side end of the socket valve core (11).

3. A quick-connect connector according to claim 1, characterized in that: The buffer valve core (12) is provided with a second liquid passage groove (125) at its end, and a liquid outlet channel (127) is provided on the side wall of the buffer valve core (12).

4. A quick-connect connector according to claim 1, characterized in that: The plug valve core (21) includes a support column (211) and a valve core end (212). The support column (211) is fixedly connected to the end of the inner side wall of the plug (2), and the valve core end (212) is fixedly connected to the side end of the support column (211). The side end of the support column (211) is provided with an inlet groove (213), and the side wall of the support column (211) is provided with an outlet groove hole (214).

5. A quick-connect connector according to claim 1, characterized in that: A sealing ring (121) is fixedly connected inside the first sliding through groove (102). A third spring (232) is provided on the inner wall side of the plug (2). An annular baffle (23) is provided at the end of the third spring (232). The annular baffle (23) is slidably connected to the support column (211).

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